The digestive systems of carnivorous plants.
The digestive systems of carnivorous plants.
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DOI：
10.1093/plphys/kiac232
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发表时间：
2022-08-29
期刊：
影响因子：
7.4
通讯作者：
Fukushima, Kenji
中科院分区：
文献类型：
--
作者：
Freund, Matthias;Graus, Dorothea;Fleischmann, Andreas;Gilbert, Kadeem J.;Lin, Qianshi;Renner, Tanya;Stigloher, Christian;Albert, Victor;Hedrich, Rainer;Fukushima, Kenji
为了在营养贫乏的栖息地生存，食虫植物捕获含有不适合立即再利用的复杂物质的小生物。食虫植物的陷阱类似于动物的消化系统，具有分解和吸收营养的机制。在过去的几千万年里，多种被子植物谱系通过改变植物特有的器官（包括叶子）而逐渐获得了这种能力。肉食性陷阱叶的表皮上有一群称为腺体的特殊细胞，它们通过消化和吸收从猎物中获取物质。食虫植物的消化腺分泌粘液、瓶液、酸和蛋白质，包括消化酶。然后，相同的（或形态上不同的）腺体通过各种膜转运蛋白或内吞作用吸收释放的化合物。因此，这些腺体的功能类似于在消化系统中具有重要生理作用的动物细胞，例如胃壁细胞和肠上皮细胞。然而，食肉植物配备了处理或整合植物特有特征的策略，例如细胞壁、表皮角质层和植物激素。在这篇综述中，我们对趋同进化的食肉植物的消化和吸收能力提供了系统的视角，重点是腺体的形式和功能。食肉植物消化腺和吸收腺的形式和功能的比较揭示了它们的趋同进化。
To survive in the nutrient-poor habitats, carnivorous plants capture small organisms comprising complex substances not suitable for immediate reuse. The traps of carnivorous plants, which are analogous to the digestive systems of animals, are equipped with mechanisms for the breakdown and absorption of nutrients. Such capabilities have been acquired convergently over the past tens of millions of years in multiple angiosperm lineages by modifying plant-specific organs including leaves. The epidermis of carnivorous trap leaves bears groups of specialized cells called glands, which acquire substances from their prey via digestion and absorption. The digestive glands of carnivorous plants secrete mucilage, pitcher fluids, acids, and proteins, including digestive enzymes. The same (or morphologically distinct) glands then absorb the released compounds via various membrane transport proteins or endocytosis. Thus, these glands function in a manner similar to animal cells that are physiologically important in the digestive system, such as the parietal cells of the stomach and intestinal epithelial cells. Yet, carnivorous plants are equipped with strategies that deal with or incorporate plant-specific features, such as cell walls, epidermal cuticles, and phytohormones. In this review, we provide a systematic perspective on the digestive and absorptive capacity of convergently evolved carnivorous plants, with an emphasis on the forms and functions of glands. A comparison of the forms and functions of digestive and absorptive glands in carnivorous plants sheds light on their convergent evolution.
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影响因子：
7
作者：
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影响因子：
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通讯作者：
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