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首页> 外文期刊>Plant and Soil >Do genetically-specific tree canopy environments feed back to affect genetically specific leaf decomposition rates?
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Do genetically-specific tree canopy environments feed back to affect genetically specific leaf decomposition rates?

机译：转基因特异性的树冠遮篷环境送回影响基因特异性叶片分解率吗？

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AimsIn forest ecosystems, trees may have genetically distinct patterns in leaf decomposition. Trees also can have genetically distinct canopy environments which modify temperature, moisture, and microbial communities on the forest floor. The interaction between these factors may result in underexplored interactions between microenvironment and leaf decomposition at the genotype level.MethodsWe compare litter decomposition rates for distinct genotypes of Fremont cottonwood (Populus fremontii) grown in a common garden environment under three different riparian conditions: 1) under a 16-tree stand of the same genotype, 2) under a 16-tree stand of another genotype, and 3) under a 16-tree stand of 16 different genotypes. Genotypes differed in canopy size and phenology.ResultsWhile genotype exerted a strong effect on decomposition, this effect was most pronounced when litter was decomposed under a self-similar (home) canopy. The strongest driver of decomposition rates across all factors (including litter quality and environmental factors) was spring (leaf-out) and fall (leaf-drop) phenology, but responses were variable by genotype.ConclusionsThe influence of genetics on litter decomposition, canopy environment, and tree phenology provides justification for the inclusion of stand-level traits like canopy cover into models of decomposition and complicates the results of studies that rely on litter quality traits alone.
机译：Aimsin Forest Ecosystems，树木可能在叶子分解中具有基因上独特的图案。树木还可在森林地板上修改温度，水分和微生物群落的基因截然不同的树冠。这些因素之间的相互作用可能导致基因型水平的微环境和叶片分解之间的望远镜相互作用。在三个不同的河岸条件下共同的园林环境中生长的弗里蒙特·斯坦伍德（Populus Fremontii）的不同基因型的凋落物分解率：1）在另一个基因型的16棵树展处的16棵树架上，2）在16棵不同的基因型的16棵树支架下。基因型在树冠大小和候选中不同。培养物基因型对分解产生了强烈的效果，当垃圾在自相似（家庭）冠层下分解时，这种效果最为明显。所有因素（包括垃圾质量和环境因素）的分解率最强的驱动力是春季（叶子）和堕落（叶片）候选，但反应是通过基因型可变的。结论遗传对垃圾分解的影响，冠层环境然而，树木吩咐将像架子覆盖的架子覆盖物中包含到分解模型，并使研究结果复杂化依赖于垃圾质量特征的研究。

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