Experimental warming under field conditions alters starch multi-structure and flour and starch functionality of late-season indica-japonica hybrid rice in southern China
文献类型： 外文期刊
作者： Yang, Taotao 1 ; Xiong, Ruoyu 2 ; Wang, Haiyuan 2 ; Tan, Xueming 2 ; Huang, Shan 2 ; Zhang, Jun 3 ; Zhang, Bin 1 ; Zeng, Yanhua 2 ;
作者机构： 1.Guangdong Acad Agr Sci, Rice Res Inst, Guangdong Key Lab New Technol Rice Breeding, Guangdong Rice Engn Lab, Guangzhou, Peoples R China
2.Jiangxi Agr Univ, Key Lab Crop Physiol Ecol & Genet Breeding, Minist Educ, Nanchang, Peoples R China
3.Chinese Acad Agr Sci, Inst Crop Sci, Beijing, Peoples R China
关键词： climate warming; indica-japonica hybrid rice; starch multi-structure; pasting property; thermal property
期刊名称：FRONTIERS IN SUSTAINABLE FOOD SYSTEMS （ 影响因子：4.7； 五年影响因子：5.4 ）
ISSN：
年卷期： 2023 年 7 卷
页码：
收录情况： SCI
摘要： IntroductionThe effects of climate warming on starch multi-structure and flour and starch functionality of late-season indica-japonica hybrid rice (IJHR) in double-rice cropping systems are still unclear to date. MethodsA 2 years field warming experiment was conducted by using free-air temperature increase facilities with an IJHR cultivar (Yongyou1538). The starch multi-structure and flour and starch functionality of IJHR were determined. ResultsExperimental warming (on average 2.1 & DEG;C over the 2 years) reduced the amylose content and increased the amount of short amylopectin branch-chains (degree of polymerization 6-12), possibly due to decreased granule-bound starch synthase activity and increased starch-branch enzyme activity. Additionally, the protein content, starch granule diameter, relative crystallinity, and swelling power of IJHR were enhanced by experimental warming. The changes in rice components and starch multi-structure under warming conditions resulted in high peak viscosity, breakdown, pasting temperature, gelatinization temperatures and enthalpy and low setback of rice starch and high peak viscosity and pasting temperature and low setback of rice flour. ConclusionOur results indicated that climate warming might improve the pasting viscosities and enhance the thermal stability of late-season IJHR.
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