‘On-off’ immune switch in plants could lead to more disease-resistant crops

‘On-off’ immune switch in plants could lead to more disease-resistant crops

Keini Dressano, Alisa Huffaker and their colleagues at the University of California San Diego’s Division of Biological Sciences have discovered a critical “on-off” switch in the plant immune response system. As described July 20 in their report published in Nature Plants, they identified a new regulatory switching mechanism — an RNA-binding protein — that helps turn on immune responses a few minutes after attack. Hours later, the switch follows with a deactivation “off” signal to avoid self-inflicted damage to the plant.

“These findings have provided new insights into how the complex intricacies of plant immune responses are orchestrated to successfully fight off pathogens, and lay a path forward for improving plant disease resistance to ensure future food stability,” said Huffaker, an assistant professor in the Section of Cell and Developmental Biology.

The novel switch was found in Arabidopsis plants to control splicing of mRNA transcripts that encode signaling protein regulators of the plant immune response. To turn immune defenses on, the researchers say, a simple chemical modification of the RNA-binding protein reverses mRNA splicing that normally keeps immune responses deactivated. To turn the immune response back off, a second chemical modification of the RNA-binding protein returns mRNA splicing to “normal,” and the immune response is back to being held in check.

The finding lays the groundwork for improved plant disease resistance and food stability.

Read the original post

O artigo foi publicado originalmente em GLP.

Comente este artigo
Anterior Debate online: "Floresta e Incêndios: Por outras políticas agro-florestais!" - 7 de agosto
Próximo Incêndios: Fogo queimou 2.700 hectares e afetou cerca de 200 agricultores em Chaves

Artigos relacionados


Viewpoint: Farm to Fork failure—How Europe’s ‘obsession’ with organics undermines the global sustainable farming movement

Europe’s quest to confront climate change and achieve carbon neutrality is being undermined by “Big Ag”? That’s not my claim. It’s the latest in a series of attacks on those who question whether […]


INOVTERRA ajudar os agricultores locais com venda de cabazes de produtos hortícolas

A INOVTERRA decidiu ajudar os agricultores locais a escoar os seus produtos. Numa altura em que não se pode sair de casa, nós enviamos-lhe […]


Oferta de emprego – Técnico Agrícola – Sintra

RPK Biopharma is a global pharmaceutical company wishing to recruit an Agricultural Technician […]