Dynamic calcium signals mediate the feeding response of the carnivorous sundew plant.
Dynamic calcium signals mediate the feeding response of the carnivorous sundew plant.
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DOI：
10.1073/pnas.2206433119
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发表时间：
2022-07-26
影响因子：
11.1
通讯作者：
中科院分区：
文献类型：
--
作者：
一些最壮观的植物性食肉的例子发生在茅膏菜科中，食肉植物捕捉并消化动物，大概是为了补充它们生长的营养贫乏的土壤。例如，茅膏菜属的茅膏菜已经进化出叶片运动和酶分泌，以促进猎物的消化。这种行为的分子基础在很大程度上仍然未知;然而，有证据表明，猎物诱导的电脉冲与防御激素茉莉酸（JA）的运动和产生相关，这可能会改变基因表达。在非肉食性植物中，JA通过细胞质Ca 2+的变化与电活性相关。在这里，我们发现，动态Ca 2+的变化也发生在茅膏菜（毛毡苔）叶响应猎物相关的机械和化学刺激。此外，抑制这些Ca 2+的变化减少JA靶基因的表达和叶片运动后化学饲料。我们的研究结果是一致的存在下，一个保守的Ca 2+依赖的JA信号通路的茅膏菜取食反应，并提供进一步的可信度的防御起源的植物食肉。
Some of the most spectacular examples of botanical carnivory—in which predator plants catch and digest animals presumably to supplement the nutrient-poor soils in which they grow—occur within the Droseraceae family. For example, sundews of the genus Drosera have evolved leaf movements and enzyme secretion to facilitate prey digestion. The molecular underpinnings of this behavior remain largely unknown; however, evidence suggests that prey-induced electrical impulses are correlated with movement and production of the defense hormone jasmonic acid (JA), which may alter gene expression. In noncarnivorous plants, JA is linked to electrical activity via changes in cytoplasmic Ca2+. Here, we find that dynamic Ca2+ changes also occur in sundew (Drosera spatulata) leaves responding to prey-associated mechanical and chemical stimuli. Furthermore, inhibition of these Ca2+ changes reduced expression of JA target genes and leaf movements following chemical feeding. Our results are consistent with the presence of a conserved Ca2+-dependent JA signaling pathway in the sundew feeding response and provide further credence to the defensive origin of plant carnivory.
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影响因子：
16.6
作者：
Matsumura M;Nomoto M;Itaya T;Aratani Y;Iwamoto M;Matsuura T;Hayashi Y;Mori T;Skelly MJ;Yamamoto YY;Kinoshita T;Mori IC;Suzuki T;Betsuyaku S;Spoel SH;Toyota M;Tada Y
通讯作者：
Tada Y
影响因子：
64.8
作者：
Mousavi, Seyed A. R.;Chauvin, Adeline;Farmer, Edward E.
通讯作者：
Farmer, Edward E.
影响因子：
4.3
作者：
WILLIAMS, SE;PICKARD, BG
通讯作者：
PICKARD, BG
影响因子：
9.4
作者：
Krausko, Miroslav;Perutka, Zdenek;Pavlovic, Andrej
通讯作者：
Pavlovic, Andrej
DOI：
10.1098/rspb.2013.0228
发表时间：
2013-05-22
影响因子：
4.7
作者：
Nakamura, Yoko;Reichelt, Michael;Mithoefer, Axel
通讯作者：
Mithoefer, Axel