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Effects of supplemental light on tomato growth and the mechanism of the photosystem II apparatus

文献类型： 外文期刊

作者： Yang, Xiaoling 1 ; Sun, Haibo 1 ; Hua, Mingyan 1 ; Song, Lanfang 1 ; Du, Zhongpin 2 ; Tong, Yana 1 ; Ma, Hongying 1 ; Song, Zhiwen 1 ;

作者机构： 1.Tianjin Acad Agr Sci, Tianjin, Peoples R China

2.Qinghai Acad Agr & Forestry Sci, Xining, Qinghai, Peoples R China

期刊名称：PLOS ONE （ 影响因子：3.752； 五年影响因子：4.069 ）

ISSN： 1932-6203

年卷期： 2022 年 17 卷 5 期

页码：

收录情况： SCI

摘要： The addition of supplemental light (SL) is an effective way to offset insufficient lighting. Although it is commonly believed that SL increases leaf photosynthesis and therefore improves yield and fruit flavor, the mechanism underlying the effects of SL on the photosystem II (PSII) apparatus remains unclear, and SL leads to high energy consumption. In order to save energy, we investigated the physiological status of the PSII apparatus, plant growth parameters and fruit parameters under two types of overhead SL with a low daily energy consumption of 0.0918 kWh m(-2). The results showed that SL significantly increased the leaf chlorophyll content from full unfolding to yellowing. However, a remarkable increase in the absorption flux per cross-section (ABS/CS), the quantum yield of electron transport (phi(Eo)) and the performance index (PI abs) was observed only in a relatively short period of the leaf life cycle. SL also enhanced the fruit yield and quality. The obviously increased Delta V-K and Delta V-J components of the chlorophyll fluorescence induction kinetic (OJIP) curve, along with the significantly decreased PIabs from days 40-60 after unfolding in the SL-treated groups, resulted in more rapid leaf aging and earlier fruit ripening compared with the control plants (CK). Therefore, an energy-friendly SL strategy can alter the physiological status of the PSII apparatus, affecting yield and fruit quality and maturity.

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