Genome Size and Labellum Epidermal Cell Size Are Evolutionarily Correlated With Floral Longevity in Paphiopedilum Species.
Genome Size and Labellum Epidermal Cell Size Are Evolutionarily Correlated With Floral Longevity in Paphiopedilum Species.
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DOI：
10.3389/fpls.2021.793516
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发表时间：
2021
影响因子：
5.6
通讯作者：
Zhang SB
中科院分区：
文献类型：
--
作者：
Zhang FP;Zhang SB
已知基因组大小影响叶片和种子的表型性状。虽然基因组大小与生物界的细胞和发育性状密切相关，但花寿命是具有重要适应性后果的花性状，但对花寿命与基因组和细胞大小之间的联系知之甚少。在这项研究中，我们研究了进化协调基因组大小，花寿命，花和叶表皮细胞大小在13兜兰属物种。我们发现，在所有的研究物种中，基因组大小与花寿命呈正相关，但与唇瓣表皮细胞大小呈负相关，花寿命和唇瓣表皮细胞大小之间存在负相关关系。这表明基因组大小可能与花的寿命有关，基因组大小对生活史性状有重要影响。此外，基因组大小与叶表皮细胞大小呈正相关，这与花中的关系不同，因为它们经历的选择压力不同或它们执行的功能不同。因此，基因组大小限制花的寿命，并且它是细胞大小的强预测因子。基因组大小对繁殖的影响可能对开花植物的进化和传粉生态学有更多的意义。
Genome size is known to influence phenotypic traits in leaves and seeds. Although genome size is closely related to cellular and developmental traits across biological kingdoms, floral longevity is a floral trait with important fitness consequence, but less is known about the link between floral longevity and sizes of genomes and cells. In this study, we examined evolutionary coordination between genome size, floral longevity, and epidermal cell size in flowers and leaves in 13 Paphiopedilum species. We found that, across all the study species, the genome size was positively correlated with floral longevity but negatively associated with labellum epidermal cell size, and a negative relationship was found between floral longevity and labellum epidermal cell size. This suggested that genome size is potentially correlated with floral longevity, and genome size has an important impact on life-history trait. In addition, genome size was positively correlated with leaf epidermal cell size, which was different from the relationship in flower due to different selective pressures they experienced or different functions they performed. Therefore, genome size constraints floral longevity, and it is a strong predictor of cell size. The impact of genome size on reproduction might have more implications for the evolution of flowering plants and pollination ecology.
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DOI：
10.1111/j.1355-4905.2005.00466.x
发表时间：
2005-02-01
期刊：
Curtis's Botanical Magazine
影响因子：
--
作者：
Chase, Mark W.
通讯作者：
Chase, Mark W.
DOI：
10.1073/pnas.58.2.533
发表时间：
1967-01-01
影响因子：
11.1
作者：
BAETCKE, KP;SPARROW, AH;SCHWEMME.SS
通讯作者：
SCHWEMME.SS
影响因子：
4.2
作者：
Cavalier-Smith, T
通讯作者：
Cavalier-Smith, T
影响因子：
1.3
作者：
BARLOW, PW
通讯作者：
BARLOW, PW
影响因子：
1.1
作者：
LAWRENCE, ME
通讯作者：
LAWRENCE, ME