Dynamics of dry matter accumulation in internodes indicates source and sink relations during grain-filling stage of japonica rice

Xu, Hongfa; Wang, Zunxin; Xiao, Feng; Liu, Yang; Li, Ganghua; Paul, Matthew J.; Li, Weiwei; Liu, Zhenghui

doi:10.1016/j.fcr.2020.108009

Cited by 15 publications

(7 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…, while endosperm matures at 30 DAF (Morita et al, 2005;Yang et al, 2006;Wang et 5 al., 2008;Chen et al, 2013;Wu et al, 2016c;Wei et al, 2017;Xu et al, 2021). Therefore, the 5 essential period of rice yield and quality formation is the Stages I-III (Fig.…”

mentioning

confidence: 99%

“…After that, rice seed enters the stage of desiccation and maturation, lasting for 20 to 5 40 days with no marked increase in grain weight. By dividing the 60-day period of grain 5 filling into two separate months, our previous report showed that only 10 % of the grain yield 5 was formed after 30 DAF (Xu et al, 2021). Under the intensive rice-wheat and rice-oilseed 5 rape cropping systems in the lower reaches of Yangtze River, China, late maturity of the rice 5 crop causes the late sowing of wheat and oilseed rape, adversely affecting the seedling growth 5 and subsequently the grain or seed yield (Bai and Tao, 2017;Zhang et al, 2020b).…”

mentioning

confidence: 99%

See 1 more Smart Citation

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

Tao

Xiao

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

The interaction between the embryo and endosperm affects seed development, an essential process in yield formation in crops such as rice. Signals that communicate between embryo and endosperm are largely unknown. Here we use the notched-belly (NB) mutant with impaired communication between embryo and endosperm to evaluate 1) the impact of embryo on developmental staging of the endosperm; 2) signaling pathways emanating from the embryo that regulate endosperm development. Hierachical clustering of mRNA datasets from embryo and endosperm samples collected through development in NB and wild type showed a delaying effect of the embryo on the developmental transition of the endosperm by extending the middle stage. K-means clustering further identified coexpression modules of gene sets specific for embryo and endosperm development. Combined gene expression and biochemical analysis showed that T6P-SnRK1, gibberellin and auxin signalling from the embryo regulate endosperm developmental transition. The data enable us to propose a new seed developmental staging system for rice and the most detailed signature of rice grain formation to date, that will direct genetic strategies for rice yield improvement.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

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

Tao

Xiao

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Increasing DMAA or increasing the distribution of dry matter in the grain during maturity is an effective way to increase grain yield 13 , 25 . This was consistent with the conclusion that grain yield was significantly positively correlated with DMAA and DMM in this study.…”

Section: Discussionmentioning

confidence: 99%

Optimized border irrigation improved soil water content, increased winter wheat grain yield and water productivity

Yan

2022

Sci Rep

View full text Add to dashboard Cite

Border irrigation is still the main irrigation method in the Huang-Huai-Hai Plain of China (HPC), we aimed to find a suitable border length to reduce the quantity of irrigation water through a traditional border irrigation system to alleviate groundwater depletion. A 2-year experiment (2017–2019) was conducted with four border lengths: 20 m (L20), 30 m (L30), 40 m (L40) and 50 m (L50); supplementary irrigation was implemented during jointing and anthesis. The results showed that compared with the L20 and L30 treatments, the L40 treatment did not significantly increase the total water consumption. Compared with the L50 treatment, the L40 treatment significantly reduced the water consumption of ineffective tillers from jointing to anthesis. There was no significant difference in flag leaf net photosynthetic rate (Pn) between L40 treatment and L50 treatment at 14–28 days after anthesis, which was 12.36% and 21.31% higher than L30 and L20 treatments respectively, and significantly increased dry matter accumulation after anthesis. Grain yield were the higher in the L40 and L50 treatments, while the water productivity (WP) was highest in the L40 treatment, which was 3.98%, 4.54% and 7.94% higher than L50, L30, and L20 treatments, respectively. Hence, the irrigation field treatments with a border length of 40 m were considered the most efficient, which provides a theoretical basis for optimizing the traditional irrigation border length in HPC.

show abstract

“…This results in lower yields (up to more than 50 %) in rice crops in the tropics compared to subtropics [2]. The grain filling phase is closely related to the relationship between the source and sink of rice plants [3]. In plant physiology, organs producing organic molecules are called sources, while organs that store and use them are called sinks.…”

Section: Introductionmentioning

confidence: 99%

“…Low sink strength is the cause of low grain filling in rice [5]. The more synchronous the relationship between the 2, the more effective the production of a plant will be [3].…”

Section: Introductionmentioning

confidence: 99%

The Role of Assimilate Dynamic in Rice Grain Filling Under Two Nitrogen Conditions

2023

View full text Add to dashboard Cite

The assimilate obtained during the grain filling phase is sourced from photosynthesis and Non Structural Carbohydrate (NSC) reserves produced during the vegetative phase in the vegetative organs. Assimilate from different sources plays different roles in the grain filling process. This study aims to investigate varietal difference on assimilate distribution, nitrogen response and yield performance. The experiment was carried out in the rice fields of Petapahan Village, Kampar Regency, Riau. The experimental design used was a split-plot in randomized complete block design (RCBD) with 2 factors and 3 groups. The first factor, as the main plot, was the condition of N. Specifically without N (NoN) (0 kg ha−1 urea) and treatment with normal N (NN) (250 kg ha−1 urea). The second factor, as a sub-plot, was rice variety, spesifically Hipa 18, IPB 3S, Ciherang, and Way Apo Buru. Hipa 18 was a variety having the largest reserves of NSC. A positive correlation was found between plant characters observed in this research, they are stem and leaf dry weight, total carbohydrates in stems (proximate analysis), photosynthetic rate, and leaf nitrogen content (Kjeldahl method). As well as other agonomic characters such as leaf area index and yield components. The highest dry weight of stems and leaves of Hipa 18 was at the heading phase, 22.6 g. While the highest carbohydrate content of the stems of the variety was 7.93 g in the same phase. This large NSC reserve supported the largest sinks as well at Hipa 18. However, the source capacity of the varieties used was found to be lower than the sink capacity. It was also known that nitrogen affected the condition of all plant characters observed in this study. Therefore optimal nitrogen fertilization is needed to get a maximum yield. HIGHLIGHTS Production of dry matter through photosynthesis and remobilization of assimilate from vegetative organs are the main sources of grain filling There was a greater amount of assimilate remobilization in Hipa 18 compared to IPB 3S, Ciherang, and Way Apo Buru The yield was positively correlated with plant height at harvest, stem and leaf dry weight, leaf N content, leaf area index, total stem carbohydrates, and photosynthesis GRAPHICAL ABSTRACT

show abstract

Dynamics of dry matter accumulation in internodes indicates source and sink relations during grain-filling stage of japonica rice

Cited by 15 publications

References 34 publications

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

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

Optimized border irrigation improved soil water content, increased winter wheat grain yield and water productivity

The Role of Assimilate Dynamic in Rice Grain Filling Under Two Nitrogen Conditions

Contact Info

Product

Resources

About