Ethylene, a Hormone at the Center-Stage of Nodulation

Frontiers in Plant Science
Frédérique C Guinel

Abstract

Nodulation is the result of a beneficial interaction between legumes and rhizobia. It is a sophisticated process leading to nutrient exchange between the two types of symbionts. In this association, within a nodule, the rhizobia, using energy provided as photosynthates, fix atmospheric nitrogen and convert it to ammonium which is available to the plant. Nodulation is recognized as an essential process in nitrogen cycling and legume crops are known to enrich agricultural soils in nitrogenous compounds. Furthermore, as they are rich in nitrogen, legumes are considered important as staple foods for humans and fodder for animals. To tightly control this association and keep it mutualistic, the plant uses several means, including hormones. The hormone ethylene has been known as a negative regulator of nodulation for almost four decades. Since then, much progress has been made in the understanding of both the ethylene signaling pathway and the nodulation process. Here I have taken a large view, using recently obtained knowledge, to describe in some detail the major stages of the process. I have not only reviewed the steps most commonly covered (the common signaling transduction pathway, and the epidermal and cortical programs), but I...Continue Reading

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Citations

Jun 4, 2019·Metabolites·Diana Montes-GrajalesEsperanza Martinez-Romero
Jun 6, 2020·Biology·Elisa GamaleroGuido Lingua
Jun 28, 2020·Journal of Applied Microbiology·Anteneh Argaw AlemnehMatthew D Denton
Dec 9, 2016·Journal of Experimental Botany·Jeremy D MurrayAnthony J Miller
Mar 10, 2018·Frontiers in Plant Science·Francisco X NascimentoBernard R Glick
Apr 2, 2019·Frontiers in Plant Science·Tatiana A SerovaViktor E Tsyganov
Apr 11, 2018·Journal of Experimental Botany·Peter J Davies
Mar 28, 2019·Frontiers in Plant Science·Francisco J RomeraRafael Pérez-Vicente
Apr 2, 2019·Frontiers in Plant Science·Peter N McGuinessEloise Foo
May 10, 2020·Journal of Experimental Botany·Ilana LambertMarc Lepetit
Nov 12, 2020·Plants·Christian A Huynh, Frédérique C Guinel
Jan 23, 2021·Scientific Reports·Safirah Tasa Nerves RatuShin Okazaki
Dec 18, 2020·The Plant Journal : for Cell and Molecular Biology·Ruth EichmannPatrick Schäfer

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Methods Mentioned

BETA
transgenic
salt treatment

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