Phenotypic plasticity in diaspore production of a amphi-basicarpic cold desert annual that produces polymorphic diaspores
Phenotypic plasticity in diaspore production of a amphi-basicarpic cold desert annual that produces polymorphic diaspores
复制标题
产生多态水硬铝石的两性寒冷沙漠一年生植物的水硬石生产中的表型可塑性
DOI：
10.1038/s41598-020-67380-0
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发表时间：
2020-07-07
影响因子：
4.6
通讯作者：
Tan, Dunyan
中科院分区：
文献类型：
--
作者：
Gan, Lu;Lu, Juanjuan;Tan, Dunyan
表型可塑性已在一水硬结二型物种中进行了研究，但没有这样的研究已经做了一个一水硬结多态物种。我们的目的是确定非生物和生物因素对表型可塑性的散孢子多态性的冷沙漠一年生Ceratocarpus arenarius。植物产生的分散单元附近的土壤表面（a，basphalps）和在中间（c）和上部（f）的植物冠层的部分进行了不同程度的土壤水分，养分供应和intramorph和intermorph密度。这些生物和非生物因子的不同水平导致了个体的总植株质量、一水孢子质量、分配到茎和生殖器官的质量以及a、c和f型的总数和比例的显著变化。胁迫对扩散单元形态的数量和质量的影响因处理而异，扩散单元f的CV最高，扩散单元a的CV最低。这种一水硬铝石多态物种的成功，在其不可预测的环境可能是增强了可塑性生产的不同类型的一水硬铝石。
Phenotypic plasticity has been studied in diaspore-dimorphic species, but no such study has been done on a diaspore-polymorphic species. Our aim was to determine the effects of abiotic and biotic factors on phenotypic plasticity of the diaspore-polymorphic cold desert annual Ceratocarpus arenarius. Plants produced from dispersal units near the soil surface (a, basicarps) and at the middle (c) and upper (f) parts of the plant canopy were subjected to different levels of soil moisture, nutrient supply and intramorph and intermorph densities. Different levels of these biotic and abiotic factors resulted in significant variation in total plant mass, diaspore mass, mass allocation to stem and reproductive organs and total number and proportion of morphs a, c and f on an individual. The effect of stress on number and mass of a dispersal unit morph varied by treatment, with dispersal unit f having the highest CV and dispersal unit a the lowest. The success of this diaspore polymorphic species in its rainfall-unpredictable environment likely is enhanced by plasticity in production of the different types of diaspores.