A hypergravity environment increases chloroplast size, photosynthesis, and plant growth in the moss Physcomitrella patens.
A hypergravity environment increases chloroplast size, photosynthesis, and plant growth in the moss Physcomitrella patens.
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DOI：
10.1007/s10265-016-0879-z
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发表时间：
2017-01
影响因子：
2.8
通讯作者：
Hanba YT
中科院分区：
文献类型：
--
作者：
Takemura K;Kamachi H;Kume A;Fujita T;Karahara I;Hanba YT
的生理和解剖学的变化重力条件下的brabrites的反应将提供重要的信息，估计植物的生理性状已经演变，以适应显着增加的重力在陆地植物历史的影响。我们量化的植物生长和光合作用的模式植物的苔藓，小立碗藓，生长在超重力环境下25天或8周，使用定制的离心机配备了照明系统的变化。这是第一次研究超重力条件下的brutites反应。在10×g时，基于冠层的植物生长显著增加，并且受到植物数量增加的强烈影响。在10×g时，单个配子体的长度显著增加。在10×g.在10×g.在超重力条件下，芽数和叶绿体大小的增加可能会提高基于面积的光合速率。我们观察到在超重力条件下叶细胞壁厚度的减少，这是在以前的研究结果使用被子植物。由于包括展叶藓在内的苔藓植物生活在密集的种群中，增加基于冠层的植物数量可能有效地增强种群的韧性，因此，这是展叶藓对超重力环境的有效适应策略。
The physiological and anatomical responses of bryophytes to altered gravity conditions will provide crucial information for estimating how plant physiological traits have evolved to adapt to significant increases in the effects of gravity in land plant history. We quantified changes in plant growth and photosynthesis in the model plant of mosses, Physcomitrella patens, grown under a hypergravity environment for 25 days or 8 weeks using a custom-built centrifuge equipped with a lighting system. This is the first study to examine the response of bryophytes to hypergravity conditions. Canopy-based plant growth was significantly increased at 10×g, and was strongly affected by increases in plant numbers. Rhizoid lengths for individual gametophores were significantly increased at 10×g. Chloroplast diameters (major axis) and thicknesses (minor axis) in the leaves of P. patens were also increased at 10×g. The area-based photosynthesis rate of P. patens was also enhanced at 10×g. Increases in shoot numbers and chloroplast sizes may elevate the area-based photosynthesis rate under hypergravity conditions. We observed a decrease in leaf cell wall thickness under hypergravity conditions, which is in contrast to previous findings obtained using angiosperms. Since mosses including P. patens live in dense populations, an increase in canopy-based plant numbers may be effective to enhance the toughness of the population, and, thus, represents an effective adaptation strategy to a hypergravity environment for P. patens.
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影响因子：
7.3
作者：
Carriqui, M.;Cabrera, H. M.;Flexas, J.
通讯作者：
Flexas, J.
影响因子：
56.9
作者：
Rensing, Stefan A.;Lang, Daniel;Boore, Jeffrey L.
通讯作者：
Boore, Jeffrey L.
DOI：
10.1098/rstb.2008.0039
发表时间：
2008-08-27
影响因子：
6.3
作者：
Meyer, Moritz;Seibt, Ulli;Griffiths, Howard
通讯作者：
Griffiths, Howard
影响因子：
9.4
作者：
Rubinstein, C. V.;Gerrienne, P.;Steemans, P.
通讯作者：
Steemans, P.
影响因子：
4.2
作者：
Nakabayashi, Izumi;Karahara, Ichirou;Kamisaka, Seiichiro
通讯作者：
Kamisaka, Seiichiro