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Liyuan Huang, Jun Yuan, Hui Wang, Xiaofeng Tan, and Genhua Niu

differences were found in relative quantum efficiency of PSII photochemistry (ΦPSII) among Al concentration of 0.5, 1.25 m m, and the control. The nonphotochemical quenching (NPQ) was greatest in the 2.0 m m , followed by those in the control and 0.5 m m Al

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Ming Liu, Aijun Zhang, Xiaoguang Chen, Rong Jin, Hongmin Li, and Zhonghou Tang

( Dannehl et al., 1996 ). In this study, it can be found that the decreased q P is consistent with the decrease of P n ( Fig. 7 ). The q N is an important nonphotochemical quenching parameter, reflecting the changes in the plant heat dissipation

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Renée L. Eriksen, Laban K. Rutto, James E. Dombrowski, and John A. Henning

transfer rate (ETR). ( H ) Nonphotochemical quenching (NPQ). Traits that reflect the health of the light-harvesting system (PSII efficiency or Ф PSII and ETR) for the different cultivars displayed trends similar to those observed in A. However, these

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Marjorie Reyes-Diaz, Miren Alberdi, and Maria de la Luz Mora

'). In this article, we used the definitions of fluorescence parameters [maximum quantum yield of the PSII (F v /F m ), effective quantum yield of the PSII ( Φ PSII), electron transport rate (ETR), and nonphotochemical quenching (NPQ)] as described by

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Dean A. Kopsell, Carl E. Sams, Dennis E. Deyton, Kristin R. Abney, David E. Kopsell, and Larry Robertson

-harvesting pigments by channeling photons to the photosynthetic reaction center and functioning as photoprotectants by quenching damaging free radicals or through active nonphotochemical quenching of excess light energy ( Croce et al., 1999b ; Niyogi, 1999

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Young-Hwan Shin, Rui Yang, Yun-Long Shi, Xu-Min Li, Qiu-Yue Fu, Jian-Liang Lu, Jian-Hui Ye, Kai-Rong Wang, Shi-Cheng Ma, Xin-Qiang Zheng, and Yue-Rong Liang

the photosystems under high-light conditions ( Powles, 1984 ). Carotenoids function to dissipate excessive energy or excitation nondestructively as heat, a phenomenon being called nonphotochemical quenching (NPQ) of chlorophyll a fluorescence

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Haijie Dou, Genhua Niu, and Mengmeng Gu

under greater PPFD levels or continuous light ( Bian et al., 2016 , 2018 ). Specifically, under greater PPFD s, nonphotochemical quenching could be engaged in upper leaves, whereas in lower leaves, penetrating green light could drive photosynthesis

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Wei Hu, Qing Di, Jingyi Wei, Jie Zhang, and Jia Liu

0 ), photochemical quenching coefficient (q p ), PSII photochemical maximum quantum efficiency (F v /F m ), chlorophyll fluorescence nonphotochemical quenching (NPQ), and actual quantum yield of PSII photochemistry (Φ PSII ). The specific measurement

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Tessa Pocock

the lumen (ΔpH) during PSN also senses changes in light, regulates electron transport, and modulates nonphotochemical quenching (NPQ) in PSII ( Foyer et al., 2012 ; Kono and Terashima, 2014 ). The photoprotective xanthophyll cycle is a significant

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Dean A. Kopsell, Carl E. Sams, and Robert C. Morrow

efficient light harvesting to a state of high thermal energy dissipation, which is usually measured as a nonphotochemical quenching of chlorophyll fluorescence ( Havaux et al., 2007 ). Zeaxanthin can modulate blue-light-dependent responses in plants and is