Molecular Improvement of Grain Weight and Yield in Rice by Using GW6 Gene

Li, Yuanyuan; Tao, Hong-jian; Zhao, Xiaojing; Xu, Jie; Li, Gengmi; Hu, Shikai; Shi, Zheng‐yuan; Wu, Liwen; Hu, Jiang; Ye, Guoyou; Guo, Longbiao

doi:10.1016/s1672-6308(13)60175-4

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…Recently, it has been reported that the GW6 gene is better for increasing grain length and width than Baodali, which was transferred into the recurrent parent 9311 indica cultivar and Zhonghua 11 cultivar japonica via MAS. Near isogenic lines (NILs) of these two cultivars displayed improved grain weight and grain production [ 275 ]. In addition, most studies have suggested that the pyramiding of grain size is a convenient method for QTLs to boost grain production in different plant species.…”

Section: Possible Strategies Used To Maintain Seed Sizementioning

confidence: 99%

Developing Genetic Engineering Techniques for Control of Seed Size and Yield

Alam

Batool

Huang

et al. 2022

IJMS

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Many signaling pathways regulate seed size through the development of endosperm and maternal tissues, which ultimately results in a range of variations in seed size or weight. Seed size can be determined through the development of zygotic tissues (endosperm and embryo) and maternal ovules. In addition, in some species such as rice, seed size is largely determined by husk growth. Transcription regulator factors are responsible for enhancing cell growth in the maternal ovule, resulting in seed growth. Phytohormones induce significant effects on entire features of growth and development of plants and also regulate seed size. Moreover, the vegetative parts are the major source of nutrients, including the majority of carbon and nitrogen-containing molecules for the reproductive part to control seed size. There is a need to increase the size of seeds without affecting the number of seeds in plants through conventional breeding programs to improve grain yield. In the past decades, many important genetic factors affecting seed size and yield have been identified and studied. These important factors constitute dynamic regulatory networks governing the seed size in response to environmental stimuli. In this review, we summarized recent advances regarding the molecular factors regulating seed size in Arabidopsis and other crops, followed by discussions on strategies to comprehend crops’ genetic and molecular aspects in balancing seed size and yield.

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Section: Possible Strategies Used To Maintain Seed Sizementioning

confidence: 99%

Developing Genetic Engineering Techniques for Control of Seed Size and Yield

Alam

Batool

Huang

et al. 2022

IJMS

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“…Rice, Oryza sativa L. (Poaceae), is one of the most important staple foods in the world (Li et al, 2014;Fu et al, 2015). It is widely consumed by ca.…”

Section: Introductionmentioning

confidence: 99%

Impacts of nitrogen fertilizer on major insect pests and their predators in transgenic Bt rice lines T2A‐1 and T1C‐19

Yang

Liu

Han

et al. 2016

Entomologia Exp Applicata

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Nitrogen is a critical factor for plant development and nitrogen input is one of the important tactics to enhance the development and yield of crops. Nevertheless, nitrogen input could influence the occurrence of insects positively or negatively. Nitrogen is also one of the main elements composing the insecticidal crystal (Cry) protein. Cry protein production could affect nitrogen partitioning in Bt plants and as such nitrogen input may influence insect pest management in transgenic Bt rice, Oryza sativa L. (Poaceae). To test this possibility, we evaluated the impacts of nitrogen regimes on the main insect pests and their predators on two Bt rice lines, T2A-1 and T1C-19, expressing Cry2A and Cry1C, respectively, and their non-transgenic parental counterpart MH63. The results showed that Cry proteins with different nitrogen regimes have enough insecticidal activity on rice leaffolder, Cnaphalocrocis medinalis Guen ee (Lepidoptera: Crambidae), in both laboratory and field experiments. Laboratory studies indicated that relevant parameters of ecological fitness in brown planthopper, Nilaparvata lugens (St al) (Hemiptera: Delphacidae), a non-target insect pest, were significantly affected by nitrogen input both on Bt and MH63 rice lines. Nymphal survival, female adult longevity, and egg hatchability in N. lugens differed significantly among rice varieties. The experiments conducted in rice fields also demonstrated that nitrogen was positively correlated with the abundance of N. lugens on Bt rice, similar to that on MH63 rice. The abundances of two predatorsthe wolf spider Pirata subpiraticus (Boesenberg & Strand) (Araneae: Lycosidae) and the bug Cyrthorhinus lividipennis Reuter (Hemiptera: Miridae)were significantly affected by rice growth stages but not by nitrogen input and rice varieties. In conclusion, the above results indicate that high nitrogen regimes for Bt rice (T2A-1 and T1C-19) and non-Bt rice (MH63) cannot facilitate the management of insect pests.

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