Study on the Resistance of ‘Cabernet Sauvignon’ Grapevine with Different Rootstocks to Colomerus vitis

Abstract

In recent years, Colomerus vitis has caused serious economic losses due to reduced grape production in Xinjiang (northwest China). Several rootstock varieties have been reported to improve the resistance of Cabernet Sauvignon to Colomerus vitis. This study explored the influence of Cabernet Sauvignon with different rootstocks on the resistance to Colomerus vitis. In particular, Cabernet Sauvignon/Cabernet Sauvignon (CS/CS) was selected as the control, and Cabernet Sauvignon grafted with five resistant rootstocks (3309C, 1103P, 140R, SO4, and 5C) was employed as the treatment. The infestation rate and injury index of Colomerus vitis to grapevines was investigated, and insect-resistant types of grapevines with different rootstocks were determined. The resveratrol (Res) content, the gene expression of resveratrol synthase (RS), and the activities of peroxidase (POD), polyphenol oxidase (PPO), catalase (CAT), and superoxide dismutase (SOD) in the leaves of each rootstock grapevine were measured. The activity of the four enzymes and the content of Res were negatively correlated with the injury index. The results revealed the ability of the rootstock to improve the resistance of grapevines to Colomerus vitis by increasing the enzyme activity or Res content. In particular, 140R, SO4, and 5C rootstocks can be employed as rootstocks of the ‘Cabernet Sauvignon’ grapevine with resistance to Colomerus vitis. The contents of Res and the four resistance enzymes studied here can be used as indexes to evaluate the insect resistance of rootstock–scion combinations.

The Use of Mannans as a Sustainable Approach to Activate Vitis vinifera Innate Immunity in Response to Fungi Causing Grapevine Trunk Diseases (GTD)

“…The finding that in Airén leaves and Tempranillo grapes SOD activity increased at lower mannan concentrations and decreased at higher concentrations could be compared with the results of Shi et al [82] for Cabernet Sauvignon in which the increased SOD activity in response to Colomerus vitis infection declined in more advanced stages of the infection.…”

“…Chardonnay as a consequence of Bois Noir infection. Shi et al [82] in Cabernet Sauvignon describe an increase in PPO activity due to Colomerus vitis infection, although this activation decreases as the infection develops. Similarly, our results show that a decrease in PPO activity occurs in leaves due to the effect of the disease, which may be due to the disease being in an advanced stage of development.…”

Optimized Ultrasound-Assisted Extraction of Psidium laruotteanum Roots: A Concentrated Source of Piceid from the Brazilian Savanna

“…Additionally, after oral ingestion, piceid can be metabolized into trans-resveratrol, which becomes available in high concentrations. It has been also reported that resveratrol and phenolic compounds produced by several pine species may have an active role in protecting them against Bursaphelenchus xylophilus [5], also as active compounds in the response to mites by some plants, as Vitis vinifera [6].…”