Relationship between fluorescence yield and photochemical yield under water stress and intermediate light conditions.
Relationship between fluorescence yield and photochemical yield under water stress and intermediate light conditions.
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水分胁迫和中光条件下荧光产率与光化学产率的关系
DOI：
10.1093/jxb/ery341
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发表时间：
2019-01-01
影响因子：
6.9
通讯作者：
Liu S
中科院分区：
文献类型：
--
作者：
Chen X;Mo X;Hu S;Liu S
在中弱光条件下，水分胁迫下C4叶片的荧光产额与光化学产生量呈非线性关系。非光化学猝灭产额调节这一关系。在变化的环境中，荧光(F_S)和光化学(P)的动态变化对于理解光合作用和荧光之间的关系是至关重要的。在强光下，F产量与P产量的比值趋于恒定，但二者之间的关系及其对环境条件的响应，在中光和弱光下仍需进一步探讨。在本研究中，我们利用脉冲幅度调制(PAM)技术对夏玉米(Zea Mays L.)在气候室中的中等光照条件下生长的植物。植物按中度水分胁迫和非水分胁迫处理。结果表明，在中、弱光条件下，中度水分胁迫下，水稻的磷素产量下降，而非光化学猝灭(NPQ)产量增加。在中弱光条件下，当根区土壤水分充足时，FS产量与P产量呈负相关。在水分胁迫下，F产量与P产量在弱光下为负相关，在高光下为正相关。当NPQ产量较低时，FS产量与P产量呈负相关；当NPQ占主导地位时，FS产量与P产量呈协同正相关。
Under intermediate and low light conditions, the relationship between fluorescence yield and photochemical yield in water-stressed C4 leaves is non-linear. Non-photochemical quenching yield regulates this relationship. The dynamics between fluorescence (Fs) yield and photochemical (P) yield in a changing environment are essential for understanding the relationship between photosynthesis and fluorescence. The ratio of Fs yield and P yield tends to be constant under high light intensity, but the relationship between these two yields, and its response to environmental conditions, need to be explored further under intermediate and low light. In this study, we performed leaf-scale measurements of fluorescence parameters by pulse-amplitude modulation (PAM) technology in summer maize (Zea mays L.) plants grown under intermediate light conditions in a climate chamber. Plants were treated as moderately water stressed and non-water stressed. Results showed that a decrease in P yield was accompanied by increases in Fs yield and non-photochemical quenching (NPQ) yield in response to moderate water stress under intermediate and low light conditions. Fs yield was negatively correlated with P yield under intermediate and low light conditions when there was sufficient soil water in the root zone. Under water stress, the correlation between Fs yield and P yield was negative in low light, but became positive under higher light levels. Fs yield was negatively related to P yield when NPQ yield was low; however, they were synergistically and positively associated when excessive light dissipation was dominated by NPQ.
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影响因子：
6.2
作者：
Liu, Liangyun;Guan, Linlin;Liu, Xinjie
通讯作者：
Liu, Xinjie
水分胁迫对夏玉米 (Zea mays L.) 整个生长周期生长、生物量分配和水分利用效率的影响
影响因子：
2.6
作者：
Ge, Tida;Sui, Fanggong;Sun, Ningbo
通讯作者：
Sun, Ningbo
影响因子：
11.6
作者：
Lee, Jung-Eun;Berry, Joseph A.;Frankenberg, Christian
通讯作者：
Frankenberg, Christian
DOI：
10.1073/pnas.1320008111
发表时间：
2014-04-08
影响因子：
11.1
作者：
Guanter, Luis;Zhang, Yongguang;Griffis, Timothy J.
通讯作者：
Griffis, Timothy J.
利用快速叶绿素a荧光上升O-J-I-P对紫茎泽兰种群的耐热性进行分类和特征
影响因子：
5.7
作者：
Chen, Shiguo;Yang, Juan;Qiang, Sheng
通讯作者：
Qiang, Sheng