內胚層可調節植物體內穩態
作者:
小柯機器人發布時間:2020/11/22 23:31:17
英國諾丁漢大學Gabriel Castrillo及其研究團隊發現微生物群與根內胚層之間的協調支持植物礦物質營養的體內穩態。這一研究成果於2020年發11月19日表在《科學》雜誌上。
他們證明了在模式植物擬南芥中控制內胚層功能的基因有助於植物微生物組的組裝。他們表徵了由微生物群驅動的內胚層分化的調控機制,對營養穩態具有深遠影響。此外,他們證明了這種機制與微生物群抑制根中對植物激素脫落酸反應的能力有關。他們的發現將內胚層確立為協調微生物群裝配和體內平衡機制的調節樞紐。
據了解,植物的根和動物的腸道已經進化出專門的細胞層,以控制礦物質營養的體內平衡,該平衡必須耐受駐留的微生物群,同時保持體內平衡。對於植物的礦質養分平衡至關重要的內胚層中根部擴散障礙與否以及如何與微生物群協調尚不清楚。
附:英文原文
Title: Coordination between microbiota and root endodermis supports plant mineral nutrient homeostasis
Author: Isai Salas-González, Guilhem Reyt, Paulina Flis, Valéria Custódio, David Gopaulchan, Niokhor Bakhoum, Tristan P. Dew, Kiran Suresh, Rochus Benni Franke, Jeffery L. Dangl, David E. Salt, Gabriel Castrillo
Issue&Volume: 2020/11/19
Abstract: Plant roots and animal guts have evolved specialized cells layers to control mineral nutrient homeostasis that must tolerate the resident microbiota while keeping homeostatic integrity. Whether and how the root diffusion barriers in the endodermis, critical for the mineral nutrient balance of plants, coordinates with the microbiota, is unknown. We demonstrate that genes controlling endodermal function in the model plant Arabidopsis thaliana contribute to the plant microbiome assembly. We characterize a regulatory mechanism of endodermal differentiation driven by the microbiota with profound effects on nutrient homeostasis. Furthermore, we demonstrate that this mechanism is linked to the microbiota’s capacity to repress responses to the phytohormone abscisic acid in the root. Our findings establish the endodermis as a regulatory hub coordinating microbiota assembly and homeostatic mechanisms.
DOI: 10.1126/science.abd0695
Source: https://science.sciencemag.org/content/early/2020/11/18/science.abd0695
Science:《科學》,創刊於1880年。隸屬於美國科學促進會,最新IF:41.037