Home
Resources
Publications
Season Affects Yield and Metabolic Profiles of Rice ( Oryza sativa) under High Night Temperature Stress in the Field

Season Affects Yield and Metabolic Profiles of Rice ( Oryza sativa) under High Night Temperature Stress in the Field

Stephanie Schaarschmidt, Lovely Mae F Lawas, Ulrike Glaubitz, Xia Li, Alexander Erban, Joachim Kopka, S V Krishna Jagadish, Dirk K Hincha, Ellen Zuther

Int J Mol Sci. 2020 Apr 30;21(9):3187.

PMID: 32366031

Abstract:

Rice (Oryza sativa) is the main food source for more than 3.5 billion people in the world. Global climate change is having a strong negative effect on rice production. One of the climatic factors impacting rice yield is asymmetric warming, i.e., the stronger increase in nighttime as compared to daytime temperatures. Little is known of the metabolic responses of rice to high night temperature (HNT) in the field. Eight rice cultivars with contrasting HNT sensitivity were grown in the field during the wet (WS) and dry season (DS) in the Philippines. Plant height, 1000-grain weight and harvest index were influenced by HNT in both seasons, while total grain yield was only consistently reduced in the WS. Metabolite composition was analysed by gas chromatography-mass spectrometry (GC-MS). HNT effects were more pronounced in panicles than in flag leaves. A decreased abundance of sugar phosphates and sucrose, and a higher abundance of monosaccharides in panicles indicated impaired glycolysis and higher respiration-driven carbon losses in response to HNT in the WS. Higher amounts of alanine and cyano-alanine in panicles grown in the DS compared to in those grown in the WS point to an improved N-assimilation and more effective detoxification of cyanide, contributing to the smaller impact of HNT on grain yield in the DS.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR42194	Cyanide, Total - WS			Price
IAR42198	Total Cyanide - WS			Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: