气候变化领域集成服务门户(CCPortal): Quantifying the Individual and Combined Effects of Short-Term Heat Stress at Booting and Flowering Stages on Nonstructural Carbohydrates Remobilization in Rice

CCPortal

DOI	10.3390/plants13060810
	Quantifying the Individual and Combined Effects of Short-Term Heat Stress at Booting and Flowering Stages on Nonstructural Carbohydrates Remobilization in Rice
	Mahmood, Aqib; Wang, Wei; Raza, Muhammad Ali; Ali, Iftikhar; Liu, Bing; Liu, Leilei; Zhu, Yan; Tang, Liang; Cao, Weixing
发表日期	2024
ISSN	2223-7747
起始页码	13
结束页码	6
卷号	13 期号:6
英文摘要	Rice production is threatened by climate change, particularly heat stress (HS). Nonstructural carbohydrates (NSCs) remobilization is a key physiological mechanism that allows rice plants to cope with HS. To investigate the impact of short-term HS on the remobilization of nonstructural carbohydrates (NSCs) in rice, two cultivars (Huaidao-5 and Wuyunjing-24) were subjected to varying temperature regimes: 32/22/27 degrees C as the control treatment, alongside 40/30/35 degrees C and 44/34/39 degrees C, for durations of 2 and 4 days during the booting, flowering, and combined stages (booting + flowering) within phytotrons across the years 2016 and 2017. The findings revealed that the stem's NSC concentration increased, while the panicle's NSCs concentration, the efficiency of NSCs translocation from the stem, and the stem NSC contribution to grain yield exhibited a consistent decline. Additionally, sugar and starch concentrations increased in leaves and stems during late grain filling and maturity stages, while in panicles, the starch concentration decreased and sugar concentration increased. The heat-tolerant cultivar, Wuyunjing-24, exhibited higher panicle NSC accumulation under HS than the heat-sensitive cultivar, Huaidao-5, which had more stem NSC accumulation. The flowering stage was the most vulnerable to HS, followed by the combined and booting stages. Heat degree days (HDDs) were utilized to quantify the effects of HS on NSC accumulation and translocation, revealing that the flowering stage was the most affected. These findings suggest that severe HS makes the stem the primary carbohydrate storage sink, and alleviation under combined HS aids in evaluating NSC accumulation, benefiting breeders in developing heat-tolerant rice varieties.
英文关键词	rice (Oryza sativa L.); nonstructural carbohydrates; translocation; heat tolerance
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001193050800001
来源期刊	PLANTS-BASEL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303575
作者单位	Nanjing Agricultural University; Islamia University of Bahawalpur; University of Agriculture Faisalabad
推荐引用方式 GB/T 7714	Mahmood, Aqib,Wang, Wei,Raza, Muhammad Ali,et al. Quantifying the Individual and Combined Effects of Short-Term Heat Stress at Booting and Flowering Stages on Nonstructural Carbohydrates Remobilization in Rice[J],2024,13(6).
APA	Mahmood, Aqib.,Wang, Wei.,Raza, Muhammad Ali.,Ali, Iftikhar.,Liu, Bing.,...&Cao, Weixing.(2024).Quantifying the Individual and Combined Effects of Short-Term Heat Stress at Booting and Flowering Stages on Nonstructural Carbohydrates Remobilization in Rice.PLANTS-BASEL,13(6).
MLA	Mahmood, Aqib,et al."Quantifying the Individual and Combined Effects of Short-Term Heat Stress at Booting and Flowering Stages on Nonstructural Carbohydrates Remobilization in Rice".PLANTS-BASEL 13.6(2024).