Limits...
Grapevine rootstock effects on scion sap phenolic levels, resistance to Xylella fastidiosa infection, and progression of Pierce's disease.

Wallis CM, Wallingford AK, Chen J - Front Plant Sci (2013)

Bottom Line: Cabernet Sauvignon grafted to 101-14MG, 1103P, 420A, or Schwarzmann had reduced PD severity compared to Cabernet Sauvignon grafted to 110R, 5BB, or SO4.Chardonnay grafted to Salt Creek or Freedom had reduced PD severity compared to Chardonnay grafted to RS3 or Schwarzmann.These results identified rootstocks with the capacity for reducing PD symptom progression.

View Article: PubMed Central - PubMed

Affiliation: USDA-Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center Parlier, CA, USA.

ABSTRACT
The xylem-limited bacterium Xylella fastidiosa (Xf) causes Pierce's disease (PD), an important disease of grapevine, Vitis vinifera L. Grapevine rootstocks were developed to provide increased resistance to root disease, but rootstock effects on cane and vine diseases remain unclear. Grapevines that consisted of Cabernet Sauvignon or Chardonnay grafted to 13 different rootstocks were inoculated with Xf and evaluated for PD severity and Xf titer after 6 months. A subset of six rootstock/scion combinations had xylem sap phenolic levels assessed in non-infected and Xf-infected grapevines. Vigor also was analyzed by measuring root lengths and masses. Cabernet Sauvignon grafted to 101-14MG, 1103P, 420A, or Schwarzmann had reduced PD severity compared to Cabernet Sauvignon grafted to 110R, 5BB, or SO4. Chardonnay grafted to Salt Creek or Freedom had reduced PD severity compared to Chardonnay grafted to RS3 or Schwarzmann. Chardonnay grafted to RS3 had greater Xf titer than Chardonnay grafted to 101-14MG, Freedom, or Salt Creek. No other differences in Xf titer among rootstocks were observed. Of the six scion/rootstock combinations which had xylem sap phenolics analyzed, Chardonnay/RS3 had the highest levels of most phenolics whereas Cabernet Sauvignon/101-14MG had the lowest phenolic levels. However, Chardonnay/101-14MG, which had mild PD symptoms, had greater sap levels of caftaric acid than other scion/rootstock combinations. Sap levels of caftaric acid, methyl salicylate, a procyanidin trimer, and quinic acid were greater in Xf-infected vs. non-infected grapevines. Chardonnay on 101-14MG or Salt Creek had greater root mass than Chardonnay on RS3. Cabernet Sauvignon on 101-14MG had greater root mass than Cabernet Sauvignon on 110R. These results identified rootstocks with the capacity for reducing PD symptom progression. Rootstocks also were shown to affect Xf titer, xylem sap phenolic levels, and plant vigor.

No MeSH data available.


Related in: MedlinePlus

Disease severity of (A) Cabernet Sauvignon or (B) Chardonnay scion on various rootstock cultivars. Letters represent differences pairwise by Mann–Whitney U-tests. Bars indicate SE. See text for full descriptions of rootstocks.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3860182&req=5

Figure 1: Disease severity of (A) Cabernet Sauvignon or (B) Chardonnay scion on various rootstock cultivars. Letters represent differences pairwise by Mann–Whitney U-tests. Bars indicate SE. See text for full descriptions of rootstocks.

Mentions: Disease severity was significantly different due to rootstock for Cabernet Sauvignon (H = 18.423; P = 0.031; N = 67), with plants on 110R rootstock having greater PD severity than those on Schwarzmann, 101-14, 420A, 1103P, and O39-16 (Figure 1A). Disease severity also was significantly different due to rootstock for Chardonnay (Kruskal–Wallis H = 11.878, P = 0.036; N = 39), with plants having RS3 and Schwarzmann rootstocks having more severe PD symptoms than plants having SC or Freedom rootstocks (Figure 1B). Comparing scion effects on PD severity when on the same rootstock (101-14, 110R, or Schwarzmann), only when Schwarzmann was used as a rootstock did PD severity differ due to cultivar (Mann–Whitney U = 2.000; P = 0.003; N = 14), with greater severity in Cabernet Sauvignon than Chardonnay.


Grapevine rootstock effects on scion sap phenolic levels, resistance to Xylella fastidiosa infection, and progression of Pierce's disease.

Wallis CM, Wallingford AK, Chen J - Front Plant Sci (2013)

Disease severity of (A) Cabernet Sauvignon or (B) Chardonnay scion on various rootstock cultivars. Letters represent differences pairwise by Mann–Whitney U-tests. Bars indicate SE. See text for full descriptions of rootstocks.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3860182&req=5

Figure 1: Disease severity of (A) Cabernet Sauvignon or (B) Chardonnay scion on various rootstock cultivars. Letters represent differences pairwise by Mann–Whitney U-tests. Bars indicate SE. See text for full descriptions of rootstocks.
Mentions: Disease severity was significantly different due to rootstock for Cabernet Sauvignon (H = 18.423; P = 0.031; N = 67), with plants on 110R rootstock having greater PD severity than those on Schwarzmann, 101-14, 420A, 1103P, and O39-16 (Figure 1A). Disease severity also was significantly different due to rootstock for Chardonnay (Kruskal–Wallis H = 11.878, P = 0.036; N = 39), with plants having RS3 and Schwarzmann rootstocks having more severe PD symptoms than plants having SC or Freedom rootstocks (Figure 1B). Comparing scion effects on PD severity when on the same rootstock (101-14, 110R, or Schwarzmann), only when Schwarzmann was used as a rootstock did PD severity differ due to cultivar (Mann–Whitney U = 2.000; P = 0.003; N = 14), with greater severity in Cabernet Sauvignon than Chardonnay.

Bottom Line: Cabernet Sauvignon grafted to 101-14MG, 1103P, 420A, or Schwarzmann had reduced PD severity compared to Cabernet Sauvignon grafted to 110R, 5BB, or SO4.Chardonnay grafted to Salt Creek or Freedom had reduced PD severity compared to Chardonnay grafted to RS3 or Schwarzmann.These results identified rootstocks with the capacity for reducing PD symptom progression.

View Article: PubMed Central - PubMed

Affiliation: USDA-Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center Parlier, CA, USA.

ABSTRACT
The xylem-limited bacterium Xylella fastidiosa (Xf) causes Pierce's disease (PD), an important disease of grapevine, Vitis vinifera L. Grapevine rootstocks were developed to provide increased resistance to root disease, but rootstock effects on cane and vine diseases remain unclear. Grapevines that consisted of Cabernet Sauvignon or Chardonnay grafted to 13 different rootstocks were inoculated with Xf and evaluated for PD severity and Xf titer after 6 months. A subset of six rootstock/scion combinations had xylem sap phenolic levels assessed in non-infected and Xf-infected grapevines. Vigor also was analyzed by measuring root lengths and masses. Cabernet Sauvignon grafted to 101-14MG, 1103P, 420A, or Schwarzmann had reduced PD severity compared to Cabernet Sauvignon grafted to 110R, 5BB, or SO4. Chardonnay grafted to Salt Creek or Freedom had reduced PD severity compared to Chardonnay grafted to RS3 or Schwarzmann. Chardonnay grafted to RS3 had greater Xf titer than Chardonnay grafted to 101-14MG, Freedom, or Salt Creek. No other differences in Xf titer among rootstocks were observed. Of the six scion/rootstock combinations which had xylem sap phenolics analyzed, Chardonnay/RS3 had the highest levels of most phenolics whereas Cabernet Sauvignon/101-14MG had the lowest phenolic levels. However, Chardonnay/101-14MG, which had mild PD symptoms, had greater sap levels of caftaric acid than other scion/rootstock combinations. Sap levels of caftaric acid, methyl salicylate, a procyanidin trimer, and quinic acid were greater in Xf-infected vs. non-infected grapevines. Chardonnay on 101-14MG or Salt Creek had greater root mass than Chardonnay on RS3. Cabernet Sauvignon on 101-14MG had greater root mass than Cabernet Sauvignon on 110R. These results identified rootstocks with the capacity for reducing PD symptom progression. Rootstocks also were shown to affect Xf titer, xylem sap phenolic levels, and plant vigor.

No MeSH data available.


Related in: MedlinePlus