Blue light dose-responses of leaf photosynthesis, morphology, and chemical composition of Cucumis sativus grown under different combinations of red and blue light.
Blue light dose-responses of leaf photosynthesis, morphology, and chemical composition of Cucumis sativus grown under different combinations of red and blue light.
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DOI：
10.1093/jxb/erq132
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发表时间：
2010-06
影响因子：
6.9
通讯作者：
Harbinson J
中科院分区：
文献类型：
--
作者：
Hogewoning SW;Trouwborst G;Maljaars H;Poorter H;van Ieperen W;Harbinson J
光谱的蓝色部分与在高辐照度下也发展的叶子特征有关。在这项研究中，蓝光剂量-反应曲线的黄瓜叶片的光合特性和相关的发育特性，生长在相同的辐照度下，7个不同的组合的红，蓝光发光二极管提供。只有在红光单独（0%蓝色）下开发的叶片显示功能失调的光合作用操作，其特征在于次优和异质分布的暗适应Fv/Fm，气孔导度对辐照度无反应，和相对较低的光限制的量子产率CO2固定。只有7%的蓝光足以防止任何明显的功能失调的光合作用，这可以被认为是定性的蓝光效应。光合能力（Amax）是两倍高的叶片生长在7%的蓝色相比，0%的蓝色，并继续增加，增加蓝色的百分比在生长过程中测量到50%的蓝色。在100%蓝色时，Amax较低，但光合功能正常。Amax随蓝色百分比（0 - 50%）的增加与单位叶面积（LMA）的叶质量、单位面积的氮（N）含量、单位面积的叶绿素（Chl）含量和气孔导度的增加相关。以上15%的蓝色，参数Amax，LMA，叶绿素含量，光合氮利用效率，和叶绿素：氮比有可比的关系报道叶响应辐照强度。可以得出结论，蓝光在生长过程中是定性所需的正常光合功能和定量介导的叶响应类似的辐照强度。
The blue part of the light spectrum has been associated with leaf characteristics which also develop under high irradiances. In this study blue light dose–response curves were made for the photosynthetic properties and related developmental characteristics of cucumber leaves that were grown at an equal irradiance under seven different combinations of red and blue light provided by light-emitting diodes. Only the leaves developed under red light alone (0% blue) displayed dysfunctional photosynthetic operation, characterized by a suboptimal and heterogeneously distributed dark-adapted Fv/Fm, a stomatal conductance unresponsive to irradiance, and a relatively low light-limited quantum yield for CO2 fixation. Only 7% blue light was sufficient to prevent any overt dysfunctional photosynthesis, which can be considered a qualitatively blue light effect. The photosynthetic capacity (Amax) was twice as high for leaves grown at 7% blue compared with 0% blue, and continued to increase with increasing blue percentage during growth measured up to 50% blue. At 100% blue, Amax was lower but photosynthetic functioning was normal. The increase in Amax with blue percentage (0–50%) was associated with an increase in leaf mass per unit leaf area (LMA), nitrogen (N) content per area, chlorophyll (Chl) content per area, and stomatal conductance. Above 15% blue, the parameters Amax, LMA, Chl content, photosynthetic N use efficiency, and the Chl:N ratio had a comparable relationship as reported for leaf responses to irradiance intensity. It is concluded that blue light during growth is qualitatively required for normal photosynthetic functioning and quantitatively mediates leaf responses resembling those to irradiance intensity.
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影响因子：
3.7
作者：
HARBINSON, J;GENTY, B;BAKER, NR
通讯作者：
BAKER, NR
影响因子：
7.3
作者：
Oguchi, R;Hikosaka, K;Hirose, T
通讯作者：
Hirose, T
影响因子：
1.9
作者：
Massa, Gioia D.;Kim, Hyeon-Hye;Mitchell, Cary A.
通讯作者：
Mitchell, Cary A.
影响因子：
2
作者：
Matsuda, Ryo;Ohashi-Kaneko, Keiko;Kurata, Kenji
通讯作者：
Kurata, Kenji
影响因子：
7.4
作者：
BRITZ, SJ;SAGER, JC
通讯作者：
SAGER, JC