Effects of soluble starch synthase IIa allelic variation on rice grain quality with different Waxy backgrounds

2020 ◽  
Vol 100 (15) ◽  
pp. 5344-5351
Author(s):  
Hui You ◽  
Ouling Zhang ◽  
Liang Xu ◽  
Cheng Liang ◽  
Xunchao Xiang
Keyword(s):  
Grain Quality ◽  
Allelic Variation ◽  
Soluble Starch ◽  
Starch Synthase ◽  
Rice Grain

A comparative evaluation of the effect of SSI and Wx allelic variation on rice grain quality and starch physicochemical properties

2022 ◽  
Vol 371 ◽  
pp. 131205
Author(s):  
Changquan Zhang ◽  
Weizhuo Hao ◽  
Yan Lu ◽  
Yong Yang ◽  
Zhuanzhuan Chen ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Comparative Evaluation ◽  
Grain Quality ◽  
Allelic Variation ◽  
Rice Grain

scholarly journals Rice Soluble Starch Synthase I: Allelic Variation, Expression, Function, and Interaction With Waxy

2018 ◽  
Vol 9 ◽  
Author(s):  
Qianfeng Li ◽  
Xinyan Liu ◽  
Changquan Zhang ◽  
Li Jiang ◽  
Meiyan Jiang ◽  
...  
Keyword(s):  
Allelic Variation ◽  
Soluble Starch ◽  
Starch Synthase

scholarly journals Effects of soluble starch synthase genes on eating and cooking quality in semi waxy japonica rice with Wxmp

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Shu Yao ◽  
Yadong Zhang ◽  
Yanqing Liu ◽  
Chunfang Zhao ◽  
Lihui Zhou ◽  
...  
Keyword(s):  
Allelic Variation ◽  
Amylose Content ◽  
Soluble Starch ◽  
Starch Synthase ◽  
Interactive Effects ◽  
Eating Quality ◽  
Japonica Rice ◽  
Positive Effects ◽  
Profile Characteristics ◽  
Paste Viscosity

Abstract The purpose of this study is to reveal the genetic mechanism of the variation of amylose content among different semi waxy or glutinous japonica rice in the background of Wxmp gene. Sixty-four semi waxy lines derived from the hybrid progenies of Wujing 13 and Milky Princess (Kantou 194) with polymorphism in soluble starch synthase gene SSIIa (SSII-3) and SSIIIa (SSIII-2) but no polymorphism in other starch synthase related genes were used as test materials. The genotypes of SSIIa and SSIIIa allele were identified by molecular markers, and the allelic effects of SSIIa and SSIIIa gene on amylose content (AC), gel consistency (GC), gelatinization temperature (GT) and rapid visco analyzer (RVA) profile characteristics were analyzed. The significant effects of SSIIa and SSIIIa alleles and the interactive effects between two genes on AC, GT, GC and RVA profile characteristics were found. The SSIIa and SSIIIa alleles from Wujing13 shown positive effects on AC with an average increase of 1.87 and 1.23% in 2 years respectively. There was no significant effect on GT for SSIIa or SSIIIa allele but remarkable influence on GT when the co-existence of the two genes. The genotype SSIIampSSIIIamp shown 1.34 °C higher GT than genotype SSIIawjSSIIIawj (mp and wj indicated that the gene was derived from Milky Princess and Wujing 13 respectively, the same as in the below). Different genes and alleles resulted in significant different GC. The genetic effect of SSIIawj and SSIIIamp on GC was 8.74 and 9.62 mm respectively. The GC of SSIIawjSSIIIamp was 10.64 and 16.95 mm higher than that of SSIIampSSIIIawj and SSIIawjSSIIIawj, respectively. The allele SSIIawj could increase the peak viscosity (PKV), hot paste viscosity (HPV), cool paste viscosity (CPV) and breakdown viscosity (BDV), while decrease the consistency viscosity (CSV) and setback viscosity (SBV). However for the allele SSIIIawj the opposite was true. The genotype SSIIawjSSIIIamp had the largest PKV, HPV and CPV, the genotype SSIIawjSSIIIawj had the largest BDV and CSV, but the genotype SSIIawjSSIIIamp had the least SBV. According to the comprehensive effect of each trait, the genotype SSIIawjSSIIIamp was the best. The allelic variation and interaction effect of SSIIa and SSIIIa genes have important reference value for improving cooking and eating quality of semi waxy japonica rice.

Allelic variations in the soluble starch synthase II gene family result in changes of grain quality and starch properties in rice (Oryza sativa L.)

2016 ◽  
Vol 155 (1) ◽  
pp. 129-140 ◽  
Author(s):  
X. Y. FAN ◽  
M. GUO ◽  
R. D. LI ◽  
Y. H. YANG ◽  
M. LIU ◽  
...  
Keyword(s):  
Gene Family ◽  
Grain Quality ◽  
Amylose Content ◽  
Oryza Sativa L ◽  
Soluble Starch ◽  
Granule Size ◽  
Starch Synthase ◽  
Relative Crystallinity ◽  
Starch Properties ◽  
Soluble Starch Synthase Ii

SUMMARYSoluble starch synthase II (SSII) plays an important role in the biosynthesis of starch and in rice it consists of three isoforms encoded by SSII-1, SSII-2 and SSII-3. However, the genetic effects of various SSII alleles on grain quality have not been systematically characterized. In the present study, the japonica alleles on SSII-1, SSII-2 and SSII-3 (SSIIa) loci from a japonica cultivar, Suyunuo, were respectively introgressed by molecular marker-assisted selection into a typical indica cultivar, Guichao2, through successive backcrossing, generating three sets of near-isogenic lines (NILs). Grain quality and starch property analysis showed that NIL-SSII-3j exhibited significant decreases in the following parameters: amylose content, average granule size, and setback viscosity and consistency; but increases in peak viscosity, hot paste viscosity, gelatinization temperature and relative crystallinity. Moreover, the proportion of short amylopectin chains and branching degree also increased when compared with those of NIL-SSII-3i (Guochao2). Similar effects were observed in NIL-SSII-1j, and certain alterations in the fine structure of starch (granule size) were revealed. However, NIL-SSII-2j did not exert significant effect on grain quality and starch properties. In brief, among the SSII gene family, the functional diversity occurred on SSII-1 and SSII-3, and not on SSII-2. Therefore, it appears that more attention should be directed to SSII-1 and SSII-3 loci for improving the eating and cooking quality of rice.

scholarly journals Efficacy of Irrigation Interval after Anthesis on Grain Quality, Alkali Digestion, and Gel Consistency of Rice

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 325
Author(s):  
Ramin Rayee ◽  
Tran Dang Xuan ◽  
Tran Dang Khanh ◽  
Hoang-Dung Tran ◽  
Kifayatullah Kakar
Keyword(s):  
Protein Content ◽  
Grain Quality ◽  
Cooking Quality ◽  
Amylose Content ◽  
Rice Grain ◽  
Gelatinization Temperature ◽  
Rice Varieties ◽  
Irrigation Interval ◽  
Gel Consistency ◽  
Alkali Digestion

The management of amylose and protein contents and cooking quality are the main challenges in rice macronutrients and quality improvement. This experiment was conducted to examine the rice grain quality, alkali digestion, and gel consistency responses to irrigation interval after anthesis. Three rice varieties (K1, K3, and K4) were subjected to different irrigation intervals (1, 2, and 3 d) after anthesis. The findings of this study showed that the protein content was markedly increased from 6.53–6.63% to 9.93–10.16%, whilst the amylose content was decreased significantly from 22.00–22.43% to 16.33–17.56% under stressed treatments at irrigation intervals, whilst the quantity of fatty acids was not affected. The 3-d irrigation interval recorded the highest protein content but the lowest amylose value. In addition, this treatment shows lower gelatinization temperature, but it is negatively associated with hard gel consistency under irrigation interval. This study highlights that the water management following a 3-d irrigation interval from anthesis is a useful and simple treatment to improve rice nutrients and grain cooking quality.

scholarly journals Toward an understanding of the biogenesis of the starch granule. Determination of granule-bound and soluble starch synthase functions in amylopectin synthesis.

1994 ◽  
Vol 269 (40) ◽  
pp. 25150-25157
Author(s):  
M.L. Maddelein ◽  
N. Libessart ◽  
F. Bellanger ◽  
B. Delrue ◽  
C. D'Hulst ◽  
...  
Keyword(s):  
Starch Granule ◽  
Soluble Starch ◽  
Starch Synthase

Novel Wx alleles generated by base editing for improvement of rice grain quality

2021 ◽  
Author(s):  
Xiaorui Huang ◽  
Fei Su ◽  
Sheng Huang ◽  
Fating Mei ◽  
Xiaomu Niu ◽  
...  
Keyword(s):  
Grain Quality ◽  
Rice Grain ◽  
Base Editing

scholarly journals A molecular switch in sulfur metabolism to reduce arsenic and enrich selenium in rice grain

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Sheng-Kai Sun ◽  
Xuejie Xu ◽  
Zhong Tang ◽  
Zhu Tang ◽  
Xin-Yuan Huang ◽  
...  
Keyword(s):  
Grain Quality ◽  
Sulfur Metabolism ◽  
Physical Interaction ◽  
Rice Grain ◽  
Yield Losses ◽  
Serine Acetyltransferase ◽  
Cysteine Synthase ◽  
Arsenic Tolerance ◽  
Arsenic Accumulation ◽  
Low Levels

AbstractRice grains typically contain high levels of toxic arsenic but low levels of the essential micronutrient selenium. Anthropogenic arsenic contamination of paddy soils exacerbates arsenic toxicity in rice crops resulting in substantial yield losses. Here, we report the identification of the gain-of-function arsenite tolerant 1 (astol1) mutant of rice that benefits from enhanced sulfur and selenium assimilation, arsenic tolerance, and decreased arsenic accumulation in grains. The astol1 mutation promotes the physical interaction of the chloroplast-localized O-acetylserine (thiol) lyase protein with its interaction partner serine-acetyltransferase in the cysteine synthase complex. Activation of the serine-acetyltransferase in this complex promotes the uptake of sulfate and selenium and enhances the production of cysteine, glutathione, and phytochelatins, resulting in increased tolerance and decreased translocation of arsenic to grains. Our findings uncover the pivotal sensing-function of the cysteine synthase complex in plastids for optimizing stress resilience and grain quality by regulating a fundamental macronutrient assimilation pathway.

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