« Previous AbstractAssessment of Biostimulation Methods Based on Chemical Communication in Female Doe Reproduction    Next Abstract"Levels and sources of volatile organic compounds including carbonyls in indoor air of homes of Puertollano, the most industrialized city in central Iberian Peninsula. Estimation of health risk" »

Front Plant Sci

Title:		Disentangling the effects of jasmonate and tissue loss on the sex allocation of an annual plant
Author(s):		Villamil N; Sommervogel B; Pannell JR;
Address:		"Department of Ecology and Evolution, Universite de Lausanne, Lausanne, Switzerland"
Journal Title:		Front Plant Sci
Year:		2022
Volume:		20220902
Issue:
Page Number:		812558 -
DOI:		10.3389/fpls.2022.812558
ISSN/ISBN:		1664-462X (Print) 1664-462X (Electronic) 1664-462X (Linking)
Abstract:		"Selection through pollinators plays a major role in the evolution of reproductive traits. However, herbivory can also induce changes in plant sexual expression and sexual systems, potentially influencing conditions governing transitions between sexual systems. Previous work has shown that herbivory has a strong effect on sex allocation in the wind-pollinated annual plant Mercurialis annua, likely via responses to resource loss. It is also known that many plants respond to herbivory by inducing signaling, and endogenous responses to it, via the plant hormone jasmonate. Here, we attempt to uncouple the effects of herbivory on sex allocation in M. annua through resource limitation (tissue loss) versus plant responses to jasmonate hormone signaling. We used a two-factorial experiment with four treatment combinations: control, herbivory (25% chronic tissue loss), jasmonate, and combined herbivory and jasmonate. We estimated the effects of tissue loss and defense-inducing hormones on reproductive allocation, male reproductive effort, and sex allocation. Tissue loss caused plants to reduce their male reproductive effort, resulting in changes in total sex allocation. However, application of jasmonate after herbivory reversed its effect on male investment. Our results show that herbivory has consequences on plant sex expression and sex allocation, and that defense-related hormones such as jasmonate can buffer the impacts. We discuss the physiological mechanisms that might underpin the effects of herbivory on sex allocation, and their potential implications for the evolution of plant sexual systems"
Keywords:		Mercurialis annua anti-herbivore defenses defoliation herbivory hormone jasmonate sex allocation sexual system;
Notes:		"PubMed-not-MEDLINEVillamil, Nora Sommervogel, Benoit Pannell, John R eng Switzerland 2022/09/20 Front Plant Sci. 2022 Sep 2; 13:812558. doi: 10.3389/fpls.2022.812558. eCollection 2022"