Abscisic acid synergizes with sucrose to enhance grain yield and quality of rice by improving the source-sink relationship

Chen, Tingting; Li, Guangyan; Islam, Mohammad Rezaul; Fu, Weimeng; Feng, Bo; Tao, Longxing

doi:10.1186/s12870-019-2126-y

Cited by 50 publications

(44 citation statements)

References 73 publications

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“…[77,78]; and (iii) reducing sink size by accelerating embryo and grain abortion [79,80]. Whereas low ABA levels correlate with poor grain filling, high levels suppress sucrose transport to, and starch synthesis in, grains [81,82]. ABA/ethylene ratio is positively related to grain filling rate by regulating starch synthesis [83].…”

Section: Open Accessmentioning

confidence: 99%

Addressing Research Bottlenecks to Crop Productivity

Reynolds

Atkin

Bennett

et al. 2021

Trends in Plant Science

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Asymmetry of investment in crop research leads to knowledge gaps and lost opportunities to accelerate genetic gain through identifying new sources and combinations of traits and alleles. On the basis of consultation with scientists from most major seed companies, we identified several research areas with three common features: (i) relatively underrepresented in the literature; (ii) high probability of boosting productivity in a wide range of crops and environments; and (iii) could be researched in 'precompetitive' space, leveraging previous knowledge, and thereby improving models that guide crop breeding and management decisions. Areas identified included research into hormones, recombination, respiration, roots, and source-sink, which, along with new opportunities in phenomics, genomics, and bioinformatics, make it more feasible to explore crop genetic resources and improve breeding strategies. Asymmetry in Crop ResearchResearch into crop growth and adaptation under diverse cultivation scenarios has underpinned global food security, especially since the Green Revolution, during which time the global population has more than doubled. During the same time, the global area of cultivated cereals, which account for more than 70% of total calories consumed by humans, has barely changed while yields have tripled. i These two statistics alone clearly support the impact of crop research on breeding and agronomy as well as effective policy decisions and the agility of farmers to adopt new technologies [1,2]. Nonetheless, the challenges that global agriculture now faces are not just to feed 10+ billion people within a generation, but to do so under a harsher and less predictable climate, and in many cases with less water and declining soil quality [1]. Clearly, research, breeding, and agronomy must be even more effective. HighlightsMore symmetrical investment in crop research will create opportunities to improve crop models, combine new alleles through prebreeding, and suggest novel crop management practices.Consensus among public and private sectors is that more investment is needed to improve understanding of hormone crosstalk, recombination rate, maintenance respiration, root structure and function, and source-sink balance.Greater investment in these areas is expected to benefit a wide range of crops across most environments.

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Section: Open Accessmentioning

confidence: 99%

Addressing Research Bottlenecks to Crop Productivity

Reynolds

Atkin

Bennett

et al. 2021

Trends in Plant Science

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“…An appropriate concentration of exogenously applied ABA enhances the activity of sucrose synthase (SUS) and the expression of genes involved in starch synthesis, thereby improving the grain yield of rice (Tang et al., 2009). Moreover, the synergy between sucrose and ABA significantly increased grain yield and quality of rice by improving the source‐sink relationship (Chen et al., 2019). Therefore, it is possible to further improve the grain production of AKI‐ dep1 by the reasonable introgression of favorable alleles of genes/QTLs for leaf photosynthesis‐related traits (for example, GPS controlling photosynthesis rate (Takai et al., 2013)) or by an applying the appropriate concentration of sucrose and ABA in combination.…”

Section: Discussionmentioning

confidence: 99%

DEP1 affects rice grain weight and quality at different spikelet positions

et al. 2020

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Grains at different positions on rice panicles differ greatly in weight and quality, but few studies have focused on the effect of dep1 that influences panicle morphology and grain number on grain weight and quality at different spikelet positions and under different backgrounds. To clarify this, we compared spikelet characteristics and grain quality in the superior spikelets (SS) and inferior spikelets (IS), as well as sink-, source-and flow-related traits between NIL-dep1 (AKI-dep1 and LG5-dep1) and NIL-DEP1 (AKI-DEP1 and LG5-DEP1) under the Akitakomachi (AKI) and Liaogeng5 (LG5) backgrounds. The grain weight and quality in SS did not significantly differ between NIL-dep1 and NIL-DEP1 under the two backgrounds. However, the effect of dep1 on grain weight and quality in IS varied with background. AKI-dep1 significantly decreased the grain weight, processing quality, and eating and cooking quality in IS compared with AKI-DEP1, possibly due to poor grain filling and the lack of an adequate source supply and vascular system to fully meet the increased sink size. With the exception of appearance quality, the grain weight and quality of IS of LG5-dep1 were similar to LG5-DEP1, mainly due to the enlarged vascular system and similar grain filling rate and source supply. We concluded that the varied effects of dep1 on grain weight and quality under the two backgrounds could be attributed to differences in grain filling and source−sink−flow relationships.

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“…e total soluble sugar is used as a proxy for sugar and its higher values are positively correlated with the consumers acceptance [34], which determines the quality of fresh-eaten maize [35,36]. Sucrose is the main component of soluble sugar, which is also helpful in accumulation and storage of carbohydrates and plays a leading role in sweetness of maize [37] and rice [38]. e K cation directly affects the structure of many enzymes [39], which can improve the sugar content due to the interaction by enzymes [40].…”

Section: Yield and Yieldmentioning

confidence: 99%

Gradual Application of Potassium Fertilizer Elevated the Sugar Conversion Mechanism and Yield of Waxy and Sweet Fresh-Eaten Maize in the Semiarid Cold Region

Yang

Wang

et al. 2021

Journal of Food Quality

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Fresh-eaten maize (Zea mays L.) is favored by consumers for its unique flavor, good health, and medical effects. Heilongjiang province is a semiarid cold region with the annual output of 3.35 billion ears, and the demand for fresh eaten maize is increasing in the region. Therefore, improving its yield and quality is urgently needed in this area. In this study, two of thirty varieties (waxy maize Jin-262 and sweet maize Jingke-183) were used and five proportions of potassium (K2O, 120 kg/ha) were applied at sowing, jointing, and large trumpet stages to identify the high yield and quality of fresh-eaten maize under a semiarid cold ecological condition in Daqing, Heilongjiang province, China, during 2017-2018. The results from the screening of eighteen maize varieties showed that waxy maize Jin-262 and sweet maize Jingke-183 had higher starch content and soluble sucrose contents than those of other varieties. While the potassium proportions application during the sowing (20%), jointing (40%), and large trumpet stages (40%) had further significantly increased the starch content, soluble sugar content, sucrose content, and sucrose metabolic enzymes activities of Jin-262 and Jingke-183, however, the yields of Jin-262 and Jingke-183 had increased by applying potassium fertilizer during the sowing stages (50%) and jointing stages (50%). Considering the overall higher maize quality, we recommended the waxy maize Jin-262 and sweet maize Jingke-183 varieties along with application of 20% (sowing), 40% (jointing), and 40% (large trumpet stages) of 120 kg/ha potassium fertilizer for the improvement of grain quality of maize planting in the semiarid cold region. Otherwise, reasonable gradual potassium fertilization might be a wiser option.

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Abscisic acid synergizes with sucrose to enhance grain yield and quality of rice by improving the source-sink relationship

Cited by 50 publications

References 73 publications

Addressing Research Bottlenecks to Crop Productivity

Addressing Research Bottlenecks to Crop Productivity

DEP1 affects rice grain weight and quality at different spikelet positions

Gradual Application of Potassium Fertilizer Elevated the Sugar Conversion Mechanism and Yield of Waxy and Sweet Fresh-Eaten Maize in the Semiarid Cold Region

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