Photosynthetic Cost Associated With Induced Defense to Plasmopara viticola in Grapevine.

ABSTRACT: Downy mildew caused by Plasmopara viticola is one of the most destructive diseases of Vitis vinifera worldwide. Grapevine breeding programs have introgressed P. viticola-resistant traits into cultivated V. vinifera genotypes and launched interspecific hybrids with resistance against downy mildew. In general, pathogen infection affects primary metabolism, reduces plant growth and development and modifies the secondary metabolism toward defense responses, which are costly in terms of carbon production and utilization. The objective of this work was to evaluate the photosynthesis impairment by inducible defenses at the leaf level in V. vinifera cultivars resistant to P. viticola. Photosynthetic limitations imposed by P. viticola in susceptible and resistant grapevine cultivars were evaluated.

SUBMITTER: Nogueira Junior AF 

PROVIDER: S-EPMC7098430 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature