Integration of embryo–endosperm interaction into a holistic and dynamic picture of seed development using a rice mutant with notched-belly kernels

An, Lu; Xiao, Feng; Xiao, Feng; Ding, Yanfeng; Paul, Matthew J.; Liu, Zhenghui

doi:10.1016/j.cj.2021.10.007

Cited by 2 publications

References 68 publications

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“…After 21 DAF, starch granules are formed in the starchy endosperm and the endosperm enters the maturation stage ( Wu et al , 2016a ), when the embryo and endosperm continue to dehydrate until maturity ( Wu et al , 2016b ). Previous studies have examined changes in dry matter and water content during rice grain development ( An et al , 2020 ; Tao et al , 2022 ). However, the patterns of nutrient accumulation within the grain are unclear ( An et al , 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…OsVIT2 is important for aleurone Fe accumulation via sequestering Fe into vacuoles in the aleurone layer ( Che et al , 2021 ). Transcription of these genes may be dependent on the developmental stage ( Wu et al , 2020 ; Tao et al , 2022 ), thus affecting the accumulation and distribution of elements within the grain. However, whether the transcriptional dynamics of these genes affect nutrient accumulation in grains remains to be investigated.…”

Section: Introductionmentioning

confidence: 99%

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Nutrient accumulation and transcriptome patterns during grain development in rice

Ren

Kopittke

Zhao

et al. 2022

Journal of Experimental Botany

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Rice is an important source of calories and mineral nutrients for more than half of the world's population. The accumulation of essential and toxic mineral elements in rice grain affects its nutritional quality and safety. However, the patterns and processes by which different elements progressively accumulate during grain filling remain largely unknown. In the present study, we investigated temporal changes in dry matter, elemental concentrations, and the transcriptome in the grain of field-grown rice. We also investigated the effects of seed setting rate and the position of grain within rice panicle on element accumulation. Three different patterns of accumulation were observed: (i) elements including K, Mn, B, and Ca showed an early accumulation pattern; (ii) dry matter and elements including N, P, S, Mg, Cu, Zn, Mo, As, and Cd showed a mid-accumulation pattern; and (iii) elements such as Fe showed a gradual increase pattern. These different accumulation patterns can be explained by the differences in the biogeochemical behavior of the various elements in the soil, as well as differences in plant nutrient redistribution, gene expression, and the sink-source relationship. These results improve our knowledge of the dynamics of elemental accumulation in rice grain and are helpful for identification of functional genes mediating the translocation of elements to grain.

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