Leaf gas films, underwater photosyn

Leaf gas films, underwater photosynthesis and plant species distributions in a flood gradient. Plant, Cell & Environment ( IF 5.624 ) Pub Date : 2016-02-06 , DOI: 10.1111/pce.12717 Anders Winkel,Eric J W Visser,Timothy D Colmer,Klaus P Brodersen,Laurentius A C J Voesenek,Kaj Sand-Jensen,Ole PedersenTraits for survival during flooding of terrestrial plants include stimulation or inhibition of shoot elongation, aerenchyma formation and efficient gas exchange. Leaf gas films form on superhydrophobic cuticles during submergence and enhance underwater gas exchange. The main hypothesis tested was that the presence of leaf gas films influences the distribution of plant species along a natural flood gradient. We conducted laboratory experiments and field observations on species distributed along a natural flood gradient. We measured presence or absence of leaf gas films and specific leaf area of 95 species. We also measured, gas film retention time during submergence and underwater net photosynthesis and dark respiration of 25 target species. The presence of a leaf gas film was inversely correlated to flood frequency and duration and reached a maximum value of 80% of the species in the rarely flooded locations. This relationship was primarily driven by grasses that all, independently of their field location along the flood gradient, possess gas films when submerged. Although the present study and earlier experiments have shown that leaf gas films enhance gas exchange of submerged plants, the ability of species to form leaf gas films did not show the hypothesized relationship with species composition along the flood gradient.

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结果 (简体中文) 1: [复制]

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洪水梯度下的叶片气膜，水下光合作用和植物物种分布。 植物，细胞与环境（IF 5.624）发布日期：2016-02-06，DOI：10.1111 / pce.12717 Anders Winkel，Eric JW Visser，Timothy D Colmer，Klaus P Brodersen，Laurentius ACJ Voesenek，Kaj Sand-Jensen，Ole佩德森 陆地植物淹没期间的生存特征包括刺激或抑制枝条伸长，气孔形成和有效的气体交换。淹没期间，超疏水性表皮上会形成叶气膜，并增强水下气体交换。检验的主要假设是，叶片气膜的存在会影响植物物种沿自然洪水梯度的分布。我们对沿自然洪水梯度分布的物种进行了实验室实验和现场观察。我们测量了叶气膜的存在与否以及95种植物的特定叶面积。我们还测量了25种目标物种在淹没，水下净光合作用和暗呼吸期间的气膜保留时间。叶气膜的存在与洪水频率和持续时间成反比，在很少被淹没的地区达到最大值的80％。这种关系主要是由草驱动的，所有草与它们沿着洪水梯度的田间位置无关，都被淹没时具有气膜。尽管本研究和较早的实验表明，叶气膜增强了淹没植物的气体交换，但物种形成叶气膜的能力并未显示出沿洪水梯度与物种组成的假设关系。

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结果 (简体中文) 2:[复制]

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Leaf gas films, underwater photosynthesis and plant species distributions in a flood gradient. Plant, Cell & Environment ( IF 5.624 ) Pub Date : 2016-02-06 , DOI: 10.1111/pce.12717 Anders Winkel,Eric J W Visser,Timothy D Colmer,Klaus P Brodersen,Laurentius A C J Voesenek,Kaj Sand-Jensen,Ole Pedersen Traits for survival during flooding of terrestrial plants include stimulation or inhibition of shoot elongation, aerenchyma formation and efficient gas exchange. Leaf gas films form on superhydrophobic cuticles during submergence and enhance underwater gas exchange. The main hypothesis tested was that the presence of leaf gas films influences the distribution of plant species along a natural flood gradient. We conducted laboratory experiments and field observations on species distributed along a natural flood gradient. We measured presence or absence of leaf gas films and specific leaf area of 95 species. We also measured, gas film retention time during submergence and underwater net photosynthesis and dark respiration of 25 target species. The presence of a leaf gas film was inversely correlated to flood frequency and duration and reached a maximum value of 80% of the species in the rarely flooded locations. This relationship was primarily driven by grasses that all, independently of their field location along the flood gradient, possess gas films when submerged. Although the present study and earlier experiments have shown that leaf gas films enhance gas exchange of submerged plants, the ability of species to form leaf gas films did not show the hypothesized relationship with species composition along the flood gradient.

正在翻译中..

结果 (简体中文) 3:[复制]

复制成功！

洪水梯度下的叶气膜、水下光合作用和植物物种分布。 植物、细胞和环境（如果5.624）发布日期：2016-02-06，DOI:10.1111/pce.12717 安德斯·温克尔，埃里克·J·W·维瑟，蒂莫西·D·科尔默，克劳斯·P·布罗德森，劳伦斯·A·C·J·沃斯内克，卡吉·桑德·詹森，奥莱·佩德森 陆生植物在淹水过程中的生存特征包括促进或抑制芽的伸长、通气组织的形成和有效的气体交换。叶片气膜在超疏水角质层上形成，增强了水下气体交换。验证的主要假设是叶气膜的存在影响植物物种沿自然洪水梯度的分布。我们对沿自然洪水梯度分布的物种进行了实验室实验和实地观察。我们测量了95种植物叶片气膜的存在与否和比叶面积。测定了25个目标物种在淹水和水下净光合及暗呼吸过程中的气膜滞留时间。叶气膜的存在与洪水频率和持续时间成反比，在很少被洪水淹没的地区，叶气膜的最大值达到80%。这种关系主要是由草地驱动的，这些草地在淹没时都具有气膜，与它们沿洪水梯度的野外位置无关。尽管目前的研究和早期的实验已经表明，叶气膜促进了沉水植物的气体交换，但物种形成叶气膜的能力并没有表现出沿洪水梯度与物种组成的假设关系。

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