今天，介紹2篇綜述，發(fā)表在最新一期Plant Journal，有關(guān)于植物激素與防衛(wèi)反應(yīng)，放在一起食用，效果更佳、

第一篇：Long‐distance stress and developmental signals associated with abscisic acid signaling in environmental responses

網(wǎng)址：https://onlinelibrary./doi/full/10.1111/tpj.15101?af=R

開花植物由高度分化的器官組成，包括根，葉，枝和花，它們具有特定作用：根系用于吸收水分和養(yǎng)分，葉片用于光合作用和氣體交換，生殖器官用于種子生產(chǎn)。

尤其是在不利條件下，通過輸導(dǎo)系統(tǒng)進(jìn)行器官之間的通訊，對(duì)于水，養(yǎng)分和信號(hào)分子傳輸是必需的，這種通訊對(duì)于整個(gè)植物的協(xié)調(diào)生長和發(fā)育至關(guān)重要。

在本文中，重點(diǎn)介紹了了解植物激素的信號(hào)通路如何與長距離脅迫和發(fā)育信號(hào)相關(guān)的最新進(jìn)展，尤其著重于對(duì)于環(huán)境脅迫響應(yīng)。除了在干旱脅迫條件下誘導(dǎo)葉片脫落酸積累的root-to-shoot肽信號(hào)外，還總結(jié)了迄今為止報(bào)道的在環(huán)境響應(yīng)中發(fā)揮作用的多種脅迫響應(yīng)肽信號(hào)。

Flowering plants consist of highly differentiated organs, including roots, leaves, shoots and flowers, which have specific roles: root system for water and nutrient uptake, leaves for photosynthesis and gas exchange and reproductive organs for seed production. The communication between organs through the vascular system, by which water, nutrient and signaling molecules are transported, is essential for coordinated growth and development of the whole plant, particularly under adverse conditions. Here, we highlight recent progress in understanding how signaling pathways of plant hormones are associated with long‐distance stress and developmental signals, with particular focus on environmental stress responses. In addition to the root‐to‐shoot peptide signal that induces abscisic acid accumulation in leaves under drought stress conditions, we summarize the diverse stress‐responsive peptide signals reported to date to play a role in environmental responses.

第二篇：Multiple levels of crosstalk in hormone networks regulating plant defense

網(wǎng)址：https://onlinelibrary./doi/full/10.1111/tpj.15124?af=R

植物激素對(duì)于調(diào)節(jié)植物與其復(fù)雜的生物和非生物環(huán)境之間的相互作用至關(guān)重要。每種激素都會(huì)啟動(dòng)一個(gè)特定的分子途徑，而這些不同的激素途徑則整合在一個(gè)復(fù)雜的協(xié)同，拮抗和加性相互作用網(wǎng)絡(luò)中。這種通路間的交流稱為激素串?dāng)_。通過影響免疫網(wǎng)絡(luò)拓?fù)?，激素串?dāng)_對(duì)于在各種環(huán)境和內(nèi)部環(huán)境中定制植物對(duì)多種微生物和昆蟲的反應(yīng)至關(guān)重要。串?dāng)_為免疫系統(tǒng)提供了強(qiáng)大的功能，但也提高了針對(duì)過多生物相互作用因子的誘導(dǎo)防御反應(yīng)的特異性。

drylab和wetlab技術(shù)的最新進(jìn)展極大地增強(qiáng)了人們對(duì)激素串?dāng)_對(duì)免疫網(wǎng)絡(luò)功能的廣泛影響的理解，并揭示了串?dāng)_機(jī)制的基本原理。分子研究表明，激素串?dāng)_是在多種調(diào)節(jié)水平上調(diào)節(jié)的，例如通過影響蛋白質(zhì)穩(wěn)定性，基因轉(zhuǎn)錄和激素穩(wěn)態(tài)。 

本文綜述了這些對(duì)植物防御激素串?dāng)_調(diào)控的新見解，重點(diǎn)關(guān)注了擬南芥茉莉酸途徑中的串?dāng)_，強(qiáng)調(diào)了轉(zhuǎn)錄因子MYC2和ORA59是其他激素調(diào)節(jié)的主要靶標(biāo)。

Plant hormones are essential for regulating the interactions between plants and their complex biotic and abiotic environments. Each hormone initiates a specific molecular pathway and these different hormone pathways are integrated in a complex network of synergistic, antagonistic and additive interactions. This inter‐pathway communication is called hormone crosstalk. By influencing the immune network topology, hormone crosstalk is essential for tailoring plant responses to diverse microbes and insects in diverse environmental and internal contexts. Crosstalk provides robustness to the immune system but also drives specificity of induced defense responses against the plethora of biotic interactors. Recent advances in dry‐lab and wet‐lab techniques have greatly enhanced our understanding of the broad‐scale effects of hormone crosstalk on immune network functioning and have revealed underlying principles of crosstalk mechanisms. Molecular studies have demonstrated that hormone crosstalk is modulated at multiple levels of regulation, such as by affecting protein stability, gene transcription and hormone homeostasis. These new insights into hormone crosstalk regulation of plant defense are reviewed here, with a focus on crosstalk acting on the jasmonic acid pathway in Arabidopsis thaliana, highlighting the transcription factors MYC2 and ORA59 as major targets for modulation by other hormones.