Control of grain size in rice

Li, Na; Xu, Ran; Duan, Penggen; Li, Yunhai

doi:10.1007/s00497-018-0333-6

Cited by 191 publications

(168 citation statements)

References 101 publications

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“…According to the treatment methods used in this study, the superior grain and inferior grain were grouted at different ambient temperatures. Previous studies using artificial temperature control have showed that high temperature above 32°C is harmful for grain development (Ahmed et al, 2015;Li, Xu, Duan, & Li, 2018;Lyman, Jagadish, Nalley, Dixon, & Siebenmorgen, 2013), leading to a decrease in the 1000-grain weight of the superior grain, which was contradictory to the results of this study. Arshad et al (2017) even proposed a genetic improvement theory to improve our ability to cope with global temperature rise, which is contrary to the results of this study.…”

Section: Grain Shape Difference Regulation and Its Relationship Wcontrasting

confidence: 99%

Comparison of the chemical and textural properties of germ‐remaining soft rice grains from different spikelet positions

Chen

Lyu

et al. 2019

Cereal Chem

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Background and objectives Rice with very low amylose content tends to have a good taste, while germ‐remaining rice is nutritive because it retains nutrient‐rich embryos. We cultivated a batch of new germ‐remaining rice varieties with very low amylose content, and good nutrition and taste. We tested the differences in taste quality between superior and inferior grains. Findings The plumule ratio of superior grain was significantly higher than that of inferior grain. The elasticity of the surface layer and whole layer of superior grains was greatly reduced, whereas quality of balance (stickiness/hardness) and tackiness were increased. The proportion of apparent amylose content (AAC) and amylopectin long‐chain branching (Fb3) decreased, whereas the proportion of medium‐length branches (Fb1+2) increased significantly. Correlation analysis showed that small value of aspect ratio and low proportion Fb3, especially the former, can improve the quality of balance of rice. Moreover, plumule ratio showed a high correlation with grain shape and filling degree. Conclusions Therefore, for the specially developed rice, plumule ratio and edibility can be improved by promoting grain plumpness and weight ratio of the embryo, especially the inferior grain. Significance and novelty For rice taste improving, the contribution of grain filling was greater than that of chemical changes in the endosperm composition, and breeders should pay attention to grain shape improvement and filling to improve the taste of rice.

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Section: Grain Shape Difference Regulation and Its Relationship Wcontrasting

confidence: 99%

Comparison of the chemical and textural properties of germ‐remaining soft rice grains from different spikelet positions

Chen

Lyu

et al. 2019

Cereal Chem

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“…7). Both 366 grain size and weight are regulated by a complex network that integrates multiple 367 developmental and environmental signals throughout the reproductive stage, and these 368 processes are affected by sink and source characteristics including the size and photosynthetic 369 capacity of source tissues and the mobilization of assimilates to the grain [56][57][58]. We note 370 that the ysl3 mutant has significantly shorter flag leaves ( Fig.…”

mentioning

confidence: 89%

YSL3-mediated copper distribution is required for fertility, grain yield, and size in Brachypodium

Sheng

Jiang

Ishka

et al. 2019

Preprint

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35Addressing the looming global food security crisis requires the development of high yielding 36 crops. In this regard, the deficiency for the micronutrient copper in agricultural soils 37 decreases grain yield and significantly impacts a globally important crop, wheat. In cereals, 38 grain yield is determined by inflorescence architecture, flower fertility, grain size and weight. 39 Whether copper is involved in these processes and how it is delivered to the reproductive 40 organs is not well understood. We show that copper deficiency alters not only the grain set 41 but also flower development in both wheat and it's recognized model, Brachypodium 42 distachyon, We then show that a brachypodium yellow-stripe-like 3 (YSL3) transporter 43 localizes to the phloem and mediates copper delivery to flag leaves, anthers and pistils. 44 Failure to deliver copper to these structures in the ysl3 CRISPR/Cas9 mutant results in 45 delayed flowering, altered inflorescence architecture, reduced floret fertility, grain number, 46 size, and weight. These defects are rescued by copper supplementation and are complemented 47 by the YSL3 cDNA. This new knowledge will help to devise sustainable approaches for 48 improving grain yield in regions where soil quality is a major obstacle for crop production. 49 50Global food security and the demand for high-yielding grain crops are among the most urgent 51 drivers of modern plant sciences due to the current trend of population growth, extreme 52 weather conditions and decreasing arable land resources [1]. The grain yield is directly linked 53 to the crop and soil fertility. In this regard, it has been known for decades that the deficiency 54 for the micronutrient copper in alkaline, coarse-textured or organic soils that occupy more 55 than 30% of the world arable land, compromises crop fertility, reduces grain/seed yield and in 56 acute cases results in crop failure [2][3][4][5]. In accord with the essential role of copper in 57 reproduction, recent studies using synchrotron x-ray fluorescent (SXRF) microscopy 58 established that copper localizes to anthers and pistils of flowers in a model dicotyledonous 59 species, Arabidopsis thaliana, and failure to deliver copper to these reproductive organs 60 severely compromises fertility and seed set [6]. Although copper deficiency can be remedied 61 by the application of copper-based fertilizers, this approach is not environmentally friendly 62 and can lead to the build-up of toxic copper levels in soils [2,5,7]. Mineral nutrient 63 transporters have been recognized as key targets for improving the mineral use efficiency in 64 sustainable crop production [8]. Wheat is the world's third important staple crop after maize 65 (Zea mays) and rice (Oryza sativa); however, wheat grain yield remained relatively low under 66 marginal growing environments despite significant breeding efforts [9]. Wheat is also 67 regarded as the most sensitive to copper deficiency [2, 3,5]. How copper uptake and internal 68 transport is achieved in wheat and how it af...

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“…To better understand the relationship between SV-mediated expression changes and pod size domestication, we identified 18 putative seed development-related genes, which are involved in cell elongation, cytokinin regulation, and cell division. [38][39][40][41][42][43][44][45][46][47][48][49][50] These genes have SVs in upstream/exon regions (UERs) and most of them were expressed at higher levels in Hua8016 or Hua8017 than in A. monticola (Figure 4b; and Table S14, Supporting Information). AUXIN RESPONSE FACTORs (ARFs) play important roles in auxin-mediated growth and development, including fruit and seed development.…”

Section: Svs Affect Expression Of the Genes Involved In Pod Developmementioning

confidence: 99%

Comparison of Arachis monticola with Diploid and Cultivated Tetraploid Genomes Reveals Asymmetric Subgenome Evolution and Improvement of Peanut

Yin

Song

et al. 2019

Advanced Science

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Like many important crops, peanut is a polyploid that underwent polyploidization, evolution, and domestication. The wild allotetraploid peanut species Arachis monticola (A. monticola) is an important and unique link from the wild diploid species to cultivated tetraploid species in the Arachis lineage. However, little is known about A. monticola and its role in the evolution and domestication of this important crop. A fully annotated sequence of ≈2.6 Gb A. monticola genome and comparative genomics of the Arachis species is reported. Genomic reconstruction of 17 wild diploids from AA, BB, EE, KK, and CC groups and 30 tetraploids demonstrates a monophyletic origin of A and B subgenomes in allotetraploid peanuts. The wild and cultivated tetraploids undergo asymmetric subgenome evolution, including homoeologous exchanges, homoeolog expression bias, and structural variation (SV), leading to subgenome functional divergence during peanut domestication. Significantly, SV‐associated homoeologs tend to show expression bias and correlation with pod size increase from diploids to wild and cultivated tetraploids. Moreover, genomic analysis of disease resistance genes shows the unique alleles present in the wild peanut can be introduced into breeding programs to improve some resistance traits in the cultivated peanuts. These genomic resources are valuable for studying polyploid genome evolution, domestication, and improvement of peanut production and resistance.

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Control of grain size in rice

Cited by 191 publications

References 101 publications

Comparison of the chemical and textural properties of germ‐remaining soft rice grains from different spikelet positions

Comparison of the chemical and textural properties of germ‐remaining soft rice grains from different spikelet positions

YSL3-mediated copper distribution is required for fertility, grain yield, and size in Brachypodium

Comparison of Arachis monticola with Diploid and Cultivated Tetraploid Genomes Reveals Asymmetric Subgenome Evolution and Improvement of Peanut

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