Occurrence of rice preharvest sprouting varies greatly depending on past weather conditions during grain filling

Lee, HyeonSeok; Choi, Myoung-Goo; Hwang, Woon-Ha; Jeong, Jae-Hyeok; Yang, Sang-Jin; Lee, ChungGen

doi:10.1016/j.fcr.2021.108087

Cited by 10 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Preharvest sprouting (PHS) in rice ( Oryza sativa L.), induced by long rainy and high‐temperature weather during the harvest season, often occurs in rice‐growing regions of the world, especially in southeastern Asian countries (Du et al, 2018; Lee et al, 2021; Xu et al, 2019). PHS is an undesirable trait in agricultural production owing to its impact on seed viability, grain quality and yield, resulting in significant economic losses worldwide (Chen et al, 2021; Sohn et al, 2021; Zhao et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

ABA biosynthesis gene OsNCED3 contributes to preharvest sprouting resistance and grain development in rice

Chen

Xiang

Liu

et al. 2022

Plant Cell & Environment

View full text Add to dashboard Cite

Preharvest sprouting (PHS) is an unfavorable trait in cereal crops and causes serious yield loss. However, the molecular mechanism underlying PHS remains largely elusive. Here, we identified a member of 9-cis-epoxycarotenoid dioxygenase family, OsNCED3, which regulates PHS and grain development in rice (Oryza sativa L.).OsNCED3 encodes a chloroplast-localized abscisic acid (ABA) biosynthetic enzyme highly expressed in the embryo of developing seeds. Disruption of OsNCED3 by CRISPR/Cas9-mediated mutagenesis led to a lower ABA and higher gibberellic acid (GA) levels (thus a skewed ABA/GA ratio) in the embryo, promoting embryos growth and breaking seed dormancy before seed maturity and harvest, thus decreased seed dormancy and enhanced PHS in rice. However, the overexpression of OsNCED3 enhanced PHS resistance by regulating proper ABA/GA ratio in the embryo. Intriguingly, the overexpression of OsNCED3 resulted in increased grain size and weight, whereas the disruption of OsNCED3 function decreased grain size and weight. Nucleotide diversity analyses suggested that OsNCED3 may be selected during japonica populations adaptation of seed dormancy and germination. Taken together, we have identified a new OsNCED regulator involved rice PHS and grain development, and provide a potential target gene for improving PHS resistance and grain development in rice.

show abstract

Section: Introductionmentioning

confidence: 99%

ABA biosynthesis gene OsNCED3 contributes to preharvest sprouting resistance and grain development in rice

Chen

Xiang

Liu

et al. 2022

Plant Cell & Environment

View full text Add to dashboard Cite

show abstract

“…Seed weight was positively correlated with grain filling rate and grain filling duration, which had been verified in several studies about maize, rice, soybean, and so on [ 32 , 51 , 52 ]. Thus, cultivars with larger seed weights require continuous absorption of biomass over an extended period of time to fill the seed reservoir [ 28 , 29 , 30 ]. However, external factors, such as weather, climate, insect pests, and field management practices, often affect dry matter accumulation, which in turn inhibits seed filling, resulting in low seed weight [ 53 ].…”

Section: Discussionmentioning

confidence: 99%

“…However, the increase in sowing quantity increases the input required to gain a seed yield. Further, the increase in seed weight results from plants continuously filling their seeds with dry matter [ 27 , 28 ], which is negatively impacted by unfavorable environmental conditions [ 29 , 30 ]. Therefore, cultivars with high seed weight may need to have continuously favorable environmental conditions during the filling period, otherwise, their seed weight will be reduced.…”

Section: Introductionmentioning

confidence: 99%

Can Soybean Cultivars with Larger Seed Size Produce More Protein, Lipids, and Seed Yield? A Meta-Analysis

Yuan

et al. 2022

Foods

View full text Add to dashboard Cite

Increasing soybean production and ensuring greater access to soybean protein and lipids is critical for global food security and human health. Seed size (i.e., seed weight) is one of the most important agronomic traits of soybean, which not only determines the seed yield, but can also affect the yield of protein and lipids. In China, farmers favor soybean cultivars with large seeds, which they believe produce more protein and lipids; however, experimental evidence supporting this belief is lacking. Therefore, we conducted field experiments from 2017 to 2020 at 35 locations across the Huang-Huai-Hai region (HHH) of China with 64 soybean cultivars. The seed yield, seed protein content, and seed lipids content of soybean, and their relationship with seed size were investigated. The highest seed yield (i.e., seed weight per unit area) was 2996.5 kg ha−1 in the north of HHH. However, the highest seed protein content was found in the south of HHH (42.5%) for the higher temperature, which was significantly higher than that of the middle (41.7%) and north of HHH (40.2%). In contrast, the highest seed lipids content was 20.7% in the north of HHH. Temperature, which had a path coefficient on seed yield of 0.519, can promote soybean seed yield. The correlation analysis indicated that the selection of the large seed size cultivar did not increase seed yield, and even led to a reduction of seed yield under high-yield environmental conditions. The seed protein content of soybean was not increased in the cultivars with large seed sizes. In addition, under different levels of seed lipids content (<20.30% or >20.30%), a significantly negative relationship was found between seed lipids content and hundred seed weight. Therefore, it is recommended that farmers choose to plant cultivars with smaller soybean seed sizes, so as to ensure high and stable soybean seed yield and obtain more vegetable protein and lipids per unit area.

show abstract

“…It occurs when the temperature and moisture levels are suitable for sprouting. Energy is produced in the grain by the breakdown of the primary store components, starch and protein, allowing the shoot to expand if the external environmental parameters for sprouting are met [ 18 , 47 ]. In addition to that, pre-harvest sprouting is mainly directed by both genetic and environmental factors, as well as interactions between these mentioned factors.…”

Section: Pre-harvest Sproutingmentioning

confidence: 99%

“…Environmental changes can also have a significant impact on rice development and yield. For instance, prolonged rain and high humidity during rice maturation can cause seed germination in rice panicles prior to harvest, resulting in significant economic and productivity losses [ 17 , 18 ]. Due to the long period of rainy weather in early summer and autumn in Southeast Asia, pre-harvest sprouting is widespread in rice [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Seed Dormancy and Pre-Harvest Sprouting in Rice—An Updated Overview

Sohn

Subramanian

Thamilarasan

et al. 2021

IJMS

View full text Add to dashboard Cite

Pre-harvest sprouting is a critical phenomenon involving the germination of seeds in the mother plant before harvest under relative humid conditions and reduced dormancy. As it results in reduced grain yield and quality, it is a common problem for the farmers who have cultivated the rice and wheat across the globe. Crop yields need to be steadily increased to improve the people’s ability to adapt to risks as the world’s population grows and natural disasters become more frequent. To improve the quality of grain and to avoid pre-harvest sprouting, a clear understanding of the crops should be known with the use of molecular omics approaches. Meanwhile, pre-harvest sprouting is a complicated phenomenon, especially in rice, and physiological, hormonal, and genetic changes should be monitored, which can be modified by high-throughput metabolic engineering techniques. The integration of these data allows the creation of tailored breeding lines suitable for various demands and regions, and it is crucial for increasing the crop yields and economic benefits. In this review, we have provided an overview of seed dormancy and its regulation, the major causes of pre-harvest sprouting, and also unraveled the novel avenues to battle pre-harvest sprouting in cereals with special reference to rice using genomics and transcriptomic approaches.

show abstract

Occurrence of rice preharvest sprouting varies greatly depending on past weather conditions during grain filling

Cited by 10 publications

References 15 publications

ABA biosynthesis gene OsNCED3 contributes to preharvest sprouting resistance and grain development in rice

ABA biosynthesis gene OsNCED3 contributes to preharvest sprouting resistance and grain development in rice

Can Soybean Cultivars with Larger Seed Size Produce More Protein, Lipids, and Seed Yield? A Meta-Analysis

Seed Dormancy and Pre-Harvest Sprouting in Rice—An Updated Overview

Contact Info

Product

Resources

About