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editedRice2.docxRunning head:RICE (ORYZA SATIVA L.) 1
RICE (ORYZA SATIVA L.) 5
Rice (Oryza sativa L.)
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Information about Rice:
Rice (Oryza Sativa L.) known as one of the significant cereal grain in the world which is served as the main food in Asia, Africa, China, India, and many more countries. Rice is identified as the main food it brings culture, true life, and tradition. Rice has its specific history along with religious significance in the life of a human being. Among those countries, India is the world’s biggest producer of white rice.
Oryza Sativa is a type of perennial grass in a grass family which originated in Thailand, Southern China, and India. Nowadays it is cultivated in warm temperature, wet topical, and semi-tropical areas. Rice is produced on an expected 3% of the world’s cultivated land, and aidslikethemainr of calories for above half the global population. The term ‘wild rice’ can refer to any of a non-cultivated or lesser category of Oryza, though is basically used to denote North American types in the species Zizania.
Oryza Sativa is basically an annual grass which has some variations of perennial. This plants usually grow in a clump or tuft of upright stems fit for 2 meters or taller and have flat leaf edges. The flower grows on a panel or in terminal panicles which are known as branched clusters. The rectanglespikelet contains a single flower which isthinbeside the stem before forming thickbunches. The picked kernel, recognized as a rice paddy and is enclosed in a shellwhich is removed through milling.
According to a report it has been found that an entire area under rice agriculture internationally is projected to be 150,000,000 ha byyearly production be around 500 million metric tons. Nowfact,ricesignifies 29 % of the wholeproduction of grain crops internationally. International rice supplies are expected to grow 1.3% to 633 million tons (Forrest Laws, 2018). Another data have shown the major rice shipping countries global in 2017 or 2018, calculated in 1,000 metric tons. From February 2018, rice trade of India was expected to volume to a number of 12.5 million metric tons (Statista, 2018).
Rice delivers 21% human energy plus 15% of protein. Though rice protein positions high in nutritious quality between protein and cereals are modest. It also offers fiber, minerals, and vitamins while every constituent excluding carbohydrates is minimized in the time of milling. The global normal feeding of rice in the year 1999 was 58 kg and in Myanmar the highest yearly consumption at 211 kg/person.
Rice is similarly the maximum significant crop to billions of farmers who cultivate it on billions of hectares through the area, and to the various landless labors who getprofits from operating on these farms. One day, it will bevital that the production of riceendureraisingat any rate as quickly as the populace, if not quicker.
Cultivatedpopulacecompactness on Asia’s rice cultivating lands isbetween the maximum in the world plusendure to rise at anextraordinary rate. Quick population growth placesgrowing pressure on the previously strained food-cultivatingcapitals. The collective population of smaller developed statesraised from 2.4 billion to 4.5 billion. Asia estimated 60% of the worldwide population, around 92% and 90% of the world rice production and consumption. The b producing countrieslikeChina, Vietnam, India, Thailand, Indonesia, and Bangladeshbothestimatedfor abovethree-quarters of global rice production.
Development on Rice Breeding:
Rice production needs to grow in the future with the purpose ofgrowing demands. The growth of new better and advanced yielding variations more rapidly will be desired to come acrossthisrequest. Though, major rice breeding programmes have not transformed in more than a few decades. Preliminary activities need to be establishedon a vast scale likemajor breeding techniques for moistened rice breeding. Similarly,involvements from the pastimplementationneed to be evaluated for breeding lines, flowering time, analyzing plant height specified transgressive separation for everytrait. Developing unique assessment systems for plant adaptableness in contradiction to drought, low fertility and temperatures, high salinity, and disease. Varieties need to be checked. The pricebenefitsassociatedwith the pedigree technologiescan be empirically determined withcarrying out an economic investigation. To develop breeding efficiency such methods need to apply.
Genetic Diversity:
Diversity is another term of variation. Agriculture depends profoundly on the genetic diversity of harvest plants. Different breeds include the particular variation in characteristics. So, genetic diversity is a representation of genetic differences between plants within species. Different countries have maintained high genetic diversity among ecosystems and areas. With the presence of high diversity, the resources will grow on farms (Watanabe et al., 2016).
Basically, at the starting of agriculture, the process of house-training, and farming of harvest plants, a prosperity of genetic diversity has been developed.These can be exposed and efficiently encounterthe current and emergent challenges that are considered as treating for world food security. Asia has the most rice-growing countries which showthe greatest number of varieties of rice over the last 50 years. Three different DNA markers and parentage analysis successfully able p to evaluate almost 42 elite Indian rice varieties.
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Asian Country |
Degree of uniformity |
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Tropical Asia |
A single semi-dwarfing gene1 have 90% of high-yield varieties (HYV). |
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China |
92% of the hybrids depends on one basis CMS |
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Bangladesh |
65% incline from shared store |
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Indonesia |
69% incline from the shared store and > 47% of the rice area is coming under three diversities. |
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Sri Lanka |
71% fall away from the sharedstorage. |
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Myanmar |
> 71% rice area under three diversities |
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Malaysia |
> 69 rice area fall in single diversity (MR 84) |
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> 68% rice area under three diversities |
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Taiwan |
83% drop away from the shared store and 85% rice area is coming under three diversities |
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Thailand |
Almost 50% area coming under one diversity |
This above table shows the extension of genetic diversity of rice in certain Asian countries. Nigeria also considers as the main source of rice genetic diversity and includes three simple classifications.
Disease and problems of the rice plant:
· Bacterial Blight - Bacterial bright disease affects the plants at the time of seeding which is responsible for turning the green leaves in grayish green. The diseaseis increasing, leaves are becoming dry up and die. The disease occurs in both tropical and temperate environments (Wang et al., 2017).
· Rice Blast– such disease happens with the presence of fungus attacks which feed the rice plant. It is a major disease of rice as it progresses in favorable condition.
· Rice yellow mottle virus – It is a plant virus disease. The symptoms are yellow leaves, stunning, unfinished panicle action etc. such disease can be transmitted with simple touching from an infected plant to a healthy one.
The other some diseases are Sheath Rot, Bakanae, Brown Spot, Narrow Brown Spot, Bacterial Leaf Streak, Grassy stunt. These problems decrease the rice production.
Drought Tolerance:
Drought is one of the most important and noteworthy problems on the agricultural side. Most of the agricultural land lies under the semi-arid type of regions. The transient drought can bring the problem of dislodgment and food crisis. The drought mainly happens due to the low rainfall and due to the lack of the irrigation system. The crop plants make the most effectual usage of water and therefore the acceptable yields would be maintained properly. To make the plants more droughts tolerant, more varieties are needed. According to the researchers, multiple breeding lines have been created.
The plants are being compared by evaluating the working capability following water requirements and the produces dry mass. The drought tolerance of the crops has been more improved though sometimes it is not easy matters as the plants all need the much availability of water. The drought has the impact on the trees in the very short period of time. The damage of it is actually very inconsistent throughout the forest due to the site circumstances. As the after-effects of drought, the area may lack the drinking water and food. The wildlife has become destroyed. The water erosion is found in those areas and the quality of the soil has been degraded.
So the overall impact of the drought is diverse and the people and nature life has been affected through this drought. The loss of the yield, income, and the farm foreclosures has the main impact of the drought. The viable looms are limited as it supports the crop construction. The impact of the drought is not clear by considering the regions and the quality of the soil (Daryanto, Wang &Jacinthe, 2015). If these impacts of the drought can be minimized then it will be helpful for the nation to make the overall development as it involves the techniques of the risk management, the improved observation, and the forewarning system etc.
As the scientist development, different measurements have been taken regarding mitigating the problem of droughts. Different kinds of educational campaigns have been arranged and the conservation programs have been initiated so that the people could be aware of the drought and then they can take the proper measurements. The water which has no use should be restricted and the marketable use of it should be limited. The water allowance programs will also be considered.
The water systems should be more improved. For example, if there is any leak then it should be identified and maintained. For the extra demand for water, the emergency water banks should be available or any alternate supply should be searched properly.
Biotechnology:
For most of the people in the world, the crop has been the most important and the principal source of food and from the mid-century it has become the main concern that to improve the cultivation of rice. From different research and study, it has been known that the techniques of biotechnology have been used in order to develop the drought tolerance of the rice (Oryza sativa).
The population of the world has been expanded regularly. For this reason, the techniques for the improvement of the crop have been utilized in order to fulfill the demand of the century. More additional and advanced level of technology has been used to make the better improvement of the crop. By utilizing the idea of the biotechnology different methods and the techniques of gene transfer have been proposed. Though these process the breeding process could be abbreviated. Therefore all the environmental problems could be solved by using the conventional methods.The mutation breeding is one of the most important biotechnology techniques which improve the rice tolerance of drought by considering the functionality of genes. In the process of mutation, a series of nucleotides is being modified in a genome. Different kinds of genome editing techniques are being used in order to make the development of the obtainable products (Khatodia et al., 2016).
The tissues culture is another method where multiple functionalities of the science have been considered. This will be perfect for the preference of genotypes broadminded to the biotic stress. The actual danger and its impact of the drought is very much acknowledgeable regarding the production of the crops. Different advantages of biotechnology have been explored including the mutation and the tissue culture. They are will be useful in the enhancement of the rice diversity tolerant to the stresses of drought which will help to grow and provide the production by considering the impacts of the drought.
Rice Genome:
Rice is one type of crop and it is very important to produce food. It is one of the principal food, so it is a very clear choice to choose the first whole sequencing of cereal crop genomes. The International Rice Genome Sequencing Project was started in September 1997, in Singapore. It was one of the truly multinational plant's genome projects. Public rice genome has some advantage over whole genome shotgun sequenced genomes made available from Monsanto in 2000 and Syngenta in 2001 was published in 2006. So these genomes have some annotations that may be created confusion in the community but it was resolute from a single unified annotation. It is used as a model of the other cereal crops with larger genomes like maize and wheat etc. So rice is in small size but it could be used as a model.
According to the research, it is found that fifty percent of the human population all over the world depends on rice. So, for this reason, it is a very important crop for people for their living purpose. On the other side, rice has been the subject of various upbringing studies for many years. And also become a useful plant for studying biology, because it is as a model plant of monocotyledons. Rice genome size approximately 430 Mb which is very small relative to other. But its size is three times larger than Arabidopsis which is a model plant of dicots.
This rice is the first crop of the genome sequenced that gives the excellent chances to illustrate the impact on plant biology and breeding of having access to a finished that sequence. And rice researchers are continuously integrating and apply genome sequence information to understand genome structure and their evolution (Wing, Purugganan& Zhang, 2018).
Rice is one type of crop and it is very important to produce food. It is one of the principal food, so it is a very clear choice to choose the first whole sequencing of cereal crop genomes. The International Rice Genome Sequencing Project was started in September 1997, in Singapore. It was one of the truly multinational plant's genome projects. Public rice genome has some advantage over whole genome shotgun sequenced genomes made available from Monsanto in 2000 and Syngenta in 2001 was published in 2006. So these genomes have some annotations that may be created confusion in the community but it was resolute from a single unified annotation. It is used as a model of the other cereal crops with larger genomes like maize and wheat etc. So rice is in small size but it could be used as a model.
According to the research, it is found that fifty percent of the human population all over the world depends on rice. So, for this reason, it is a very important crop for people for their living purpose. On the other side, rice has been the subject of various upbringing studies for many years. And also become a useful plant for studying biology, because it is as a model plant of monocotyledons. Rice genome size approximately 430 Mb which is very small relative to other. But its size is three times larger than Arabidopsis which is a model plant of dicots.
This rice is the first crop of the genome sequenced that gives the excellent chances to illustrate the impact on plant biology and breeding of having access to a finished that sequence. And rice researchers are continuously integrating and apply genome sequence information to understand genome structure and their evolution (Wing, Purugganan& Zhang, 2018).
New Breeding technique:
New breeding techniques are needed because rice production needs are increasing day by day, for this reason, their demands are increases in order to meet their increasing demands. By developing new techniques are more quickly able to meet this demand. So the technique is RGA means rapid generation advance. In the International Rice Research Institute is re-establish RGA on a large scale to maintain breeding methods and also this method used for irrigated rice breeding.The cost of rice breeding by using RGA is more economical than the other methods such as the pedigree method etc. This process indicates the RGA method is more costs effective and their advantages are seen by after one year (Andersen et al., 2015).
The other methods of breeding are pedigree, backcrossing, and forward crossing, recurrent selection, induced mutation, single seed descent, bulk selection, and mass selection. So these breeding techniques short-term goal is cultivar development, intermediate goals are developing potential and materials used for the future and their long-term goal is creating populations and genetic conservation. By using all these methods it is found that the growth of rice is increasing in every year. So we can say that plant breeding is a numbers game.
Metabolites:
Metabolites are the intermediary crops of metabolic responses that catalyzed by various enzymes that naturally occur within cells. The term basically associated to describe small particles while its applications are larger. It has mainly two processes or we can also say that it has two steps such as primary metabolites and secondary metabolites. Primary metabolites are manufactured by the cell because it is essential for their progress. And secondary metabolites are combinations produced by a plant that is not required for the primary metabolic process while they can important ecosystem and another purpose (Prasad et al., 2015).
Metabolomics is a type of technology which is used for inclusive analysis of metabolites in a plant. Plant metabolites used for the growth, progress and organic protection of the plant against climatic alterations or natural predators are useful for nutrients. Therefore it is very important for plant metabolites.
Metabolic is responsible for rice to salt strain and it involves many metabolites. They are varied due to different stress times. As we know that rice is very sensitive especially at the seedling stage, so to understand the actual mechanism of this we have to explore salt stress response at the metabolite level.
Proteomics:
The agricultural construction faces multiple confront and therefore it considers the severity of floods and the changes of the temperature. As the result it will lead to the serious intimidation to the undergrowth worldwide. Rice which is most common crop faces the most challenging threats. In that case proteomics play an important role which underlying the mechanisms and along with this it will also help to make the identification of the current demand of it (Wu, Mirzaei& Haynes, 2017). In the proteomics the stress response of proteins are discussed and therefore it has the major impact on the molecular mechanisms by considering the information of the rice proliferation.
Panicle:
A panicle is a flower bunch that commonly cultivates at the end of a shoot. These flower bunches come in different shape, size, and color. Panicles can be loose and opened rather than compactly bunched. Each flower is able to become a fruit or seeds. All species of rice feature panicles.
Importance of Bioinformatics:
The area of computer science named bioinformatics is accumulated to examine complete-genome sequencing data. It includes procedure, channel and software development, examination, transmission,anddatabase or storing development of genomics data.
A classic complete-genome sequencing procedurecovers the following steps:
· Quality checking and data preparing;
· Genome assembly or/anddifferent calling; and
· Post-assembly examination.
It is apparent that there is a huge quantity of data present on the website, related to nearly each feature of rice research. It delivers better perceptibility to databases and is able to collect and deliver a broad image from small databases usually aimed at the particular feature and current detailed information (Sousa et al., 2016).
References:
Andersen, M. M., Landes, X., Xiang, W., Anyshchenko, A., Falhof, J., Østerberg, J. T., ...&Sandøe, P. (2015). Feasibility of new breeding techniques for organic farming. Trends in plant science, 20(7), 426-434.
Daryanto, S., Wang, L., &Jacinthe, P. A. (2015). Global synthesis of drought effects on food legume production. PloS one, 10(6), e0127401.
Forrest Laws. (2018). Bangladesh sign of growing world rice supplies. Retrieved from: https://www.deltafarmpress.com/rice/bangladesh-sign-growing-world-rice-supplies
Khatodia, S., Bhatotia, K., Passricha, N., Khurana, S. M. P., &Tuteja, N. (2016). The CRISPR/Cas genome-editing tool: application in improvement of crops. Frontiers in plant science, 7, 506.
Prasad, C., Imrhan, V., Juma, S., Maziarz, M., Prasad, A., Tiernan, C., &Vijayagopal, P. (2015). Bioactive plant metabolites in the management of non-communicable metabolic diseases: looking at opportunities beyond the horizon. Metabolites, 5(4), 733-765.
Sousa, S. A., Leitão, J. H., Martins, R. C., Sanches, J. M., Suri, J. S., &Giorgetti, A. (2016). Bioinformatics applications in life sciences and technologies. BioMed research international, 2016.
Statista. (2018). Principal Rice exporting countries worldwide in 2017/2018 (in 1,000 metric tons). Retrieved from: https://www.statista.com/statistics/255947/top-rice-exporting-countries-worldwide-2011/
Wang, J., Tian, D., Gu, K., Yang, X., Wang, L., Zeng, X., & Yin, Z. (2017). Induction of Xa10-like genes in rice cultivar Nipponbare confers disease resistance to rice bacterial blight. Molecular Plant-Microbe Interactions, 30(6), 466-477.
Watanabe, K. N., Ohsawa, R., Obara, M., Yanagihara, S., Aung, P. P., &Fukuta, Y. (2016). Genetic variation of rice (Oryza sativa L.) germplasm in Myanmar based on genomic compositions of DNA markers. Breeding science, 66(5), 762-767.
Wing, R. A., Purugganan, M. D., & Zhang, Q. (2018). The rice genome revolution: from an ancient grain to Green Super Rice. Nature Reviews Genetics, 1.
Wu, Y., Mirzaei, M., & Haynes, P. A. (2017). Proteomics of Rice—Our Most Valuable Food Crop. In Proteomics in Food Science (pp. 17-33).
