RT info:eu-repo/semantics/article
T1 Trichoderma hamatum can act as an inter-plant communicator of foliar pathogen infections by colonizing the roots of nearby plants: A new inter-plant “wired communication”
A1 Poveda Arias, Jorge
A1 Rodríguez, Víctor M.
A1 Abilleira, Rosaura
A1 Velasco, Pablo
K1 Forestal
K1 Hongos
K1 Patógenos forestales
K1 Fungal networks
K1 Inter-plant communication
K1 Salicylic acid
K1 Sclerotinia sclerotiorum
K1 Xanthomonas campestris
K1 Redes fúngicas
K1 Comunicación entre plantas
K1 Ácido salicílico
K1 Esclerotinia esclerotiorum
K1 Xanthomonas campestris
K1 3106 Ciencia Forestal
AB Trichoderma is a genus of filamentous fungi widely studied and used as a biological control agent in agriculture. However, its ability to form fungal networks for inter-plant communication by means of the so-called inter-plant "wired communication" has not yet been addressed. In our study we used the model plant Arabidopsis thaliana, the fungus Trichoderma hamatum (isolated from Brassicaceae plants) and the pathogens Sclerotinia sclerotiorum and Xanthomonas campestris (necrotrophic fungus and hemibiotrophic bacteria, respectively). We performed different combinations of isolated/neighboring plants and root colonization/non-colonization by T. hamatum, as well as foliar infections with the pathogens. In this way, we were able to determine how, in the absence of T. hamatum, there is an inter-plant communication that induces systemic resistance in neighboring plants of plants infected by the pathogens. On the other hand, the plants colonized by T. hamatum roots show a greater systemic resistance against the pathogens. Regarding the role of T. hamatum as an inter-plant communicator, it is the result of an increase in foliar signaling by jasmonic acid (increased expression of LOX1 and VSP2 genes and decreased expression of ICS1 and PR-1 genes), antagonistically increasing root signaling by salicylic acid (increased expression of ICS1 and PR-1 genes and decreased expression of LOX1 and VSP2). This situation prevents root colonization by T. hamatum of the foliarly infected plant and leads to massive colonization of the neighboring plant, where jasmonic acid-mediated systemic defenses are induced.
PB Elsevier
SN 0168-9452
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/58829
UL https://uvadoc.uva.es/handle/10324/58829
LA eng
NO Plant Science, 2023, vol. 330, 111664
NO Producción Científica
DS UVaDOC
RD 14-oct-2024