气候变化领域集成服务门户(CCPortal): Low CO2 concentration, a key environmental factor for developing plateau adapted rapeseed

CCPortal

DOI	10.1186/s13068-024-02481-w
	Low CO2 concentration, a key environmental factor for developing plateau adapted rapeseed
	Liu, Sha; Tang, Lin; Fu, Jingyan; Zhao, Caixia; Zhang, Ying; Yin, Meng; Wang, Maolin; Wang, Rui; Zhao, Yun
发表日期	2024
EISSN	2731-3654
起始页码	17
结束页码	1
卷号	17 期号:1
英文摘要	Background Photosynthesis is a fundamental process that underlies the formation of crop yield, wherein light serves as the driving force and carbon dioxide (CO2) as the raw material. These two factors have a direct influence on the progress and efficiency of photosynthesis in crops. Rapeseed is one of the four major oilseed crops worldwide. Plateau rapeseed has now become a research hotspot. However, the lack of high-yielding rapeseed germplasm resources on the plateau and the highly efficient strategy for screening them severely affect the development of rapeseed industry in plateau. Results In the rapeseed experimental fields located on the plateau (Lhasa, Tibet), we measured abundant sunlight, characterized by an average daily photosynthetically active radiation (PAR) of 1413 mu mol m(-2) s(-1). In addition, the atmospheric CO2 concentrations range from 300 to 400 ppm, which is only two-thirds of that in the plain (Chengdu, Sichuan). We found that under different measurement conditions of light intensity and CO2 concentration, different rapeseed genotypes showed significant differences in leaf photosynthetic efficiency during the seedling stage. Moreover, the rapeseed materials with high photosynthetic efficiency under low CO2 concentrations rather than high light intensity, exhibited significant advantages in biomass, yield, and oil content when cultivated on the plateau, indicating that the CO2 is the key environmental factor which limited rapeseed production in plateau. Based on photosynthetic efficiency screening under low CO2 concentrations, six rapeseed varieties SC3, SC10, SC25, SC27, SC29 and SC37, shown significantly higher yields in plateau environment compared to local control variety were obtained. In addition, the adaptability of rapeseed to plateau was found to be related to the activities of key Calvin cycle enzymes and the accumulation of photosynthetic products. Conclusions This study established a screening strategy for plateau high-yielding rapeseed materials, obtained six varieties which were suitable for plateau cultivation, explored the mechanism of rapeseed response to the plateau environment, and thus provides a feasible strategy for plateau-adapted rapeseed breeding.
英文关键词	Rapeseed; Plateau; Low carbon dioxide; Photosynthesis; Leaf carbon metabolism
语种	英语
WOS研究方向	Biotechnology & Applied Microbiology ; Energy & Fuels
WOS类目	Biotechnology & Applied Microbiology ; Energy & Fuels
WOS记录号	WOS:001168449500001
来源期刊	BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303636
作者单位	Sichuan University; Tibet Academy of Agriculture & Animal Husbandry Sciences
推荐引用方式 GB/T 7714	Liu, Sha,Tang, Lin,Fu, Jingyan,et al. Low CO2 concentration, a key environmental factor for developing plateau adapted rapeseed[J],2024,17(1).
APA	Liu, Sha.,Tang, Lin.,Fu, Jingyan.,Zhao, Caixia.,Zhang, Ying.,...&Zhao, Yun.(2024).Low CO2 concentration, a key environmental factor for developing plateau adapted rapeseed.BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS,17(1).
MLA	Liu, Sha,et al."Low CO2 concentration, a key environmental factor for developing plateau adapted rapeseed".BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 17.1(2024).