Callitriche as a potential model system for evolutionary studies on the dorsiventral distribution of stomata
Callitriche as a potential model system for evolutionary studies on the dorsiventral distribution of stomata
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DOI：
10.1080/15592324.2021.1978201
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发表时间：
2021-09-19
影响因子：
2.9
通讯作者：
Tsukaya, Hirokazu
中科院分区：
文献类型：
--
作者：
Doll, Yuki;Koga, Hiroyuki;Tsukaya, Hirokazu
控制气孔的分布对于植物适应新的或变化的环境至关重要。虽然许多植物物种主要在叶背面产生气孔（下叶造口），但有些植物在两个表面上都产生气孔（双侧造口），而剩下的少数植物仅在近轴表面上产生气孔（上侧造口）。各种选择压力推动了这三种气孔分布模式的演变。尽管我们对气孔发育和背腹叶极性的理解最近取得了进展，但不同气孔分布进化的遗传基础仍不清楚。在这里，我们提出 Callitriche 属作为一个新的模型系统来研究气孔分布演化的模式。 Callitriche 由具有不同生活方式的物种组成，包括陆生、两栖和专性水生植物。我们发现该属的物种涵盖了背腹气孔分布的所有三种模式，使其成为分布模式比较和进化分析的理想模型。我们进一步表征了不同分布模式的遗传基础，重点关注气孔关键转录因子 SPEECHLESS。未来使用有前途的模型系统 Callitriche 的研究将为气孔的进化发育生物学研究开辟新的方向。
Controlling the distribution of stomata is crucial for the adaptation of plants to new, or changing environments. While many plant species produce stomata predominantly on the abaxial leaf surface (hypostomy), some produce stomata on both surfaces (amphistomy), and the remaining few produce them only on the adaxial surface (hyperstomy). Various selective pressures have driven the evolution of these three modes of stomatal distribution. Despite recent advances in our understanding of stomatal development and dorsiventral leaf polarity, the genetic basis for the evolution of different stomatal distributions is still unclear. Here, we propose the genus Callitriche as a new model system to investigate patterns in the evolution of stomatal distribution. Callitriche comprises species with diverse lifestyles, including terrestrial, amphibious, and obligately aquatic plants. We found that species in this genus cover all three modes of dorsiventral stomatal distribution, making it a desirable model for comparative and evolutionary analyses on distribution modes. We further characterized the genetic basis of the different distribution modes, focusing on the stomatal key transcription factor SPEECHLESS. Future research using the promising model system Callitriche would open a new direction for evolutionary developmental biology studies on stomata.