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Analysis of microbial communities as...

University of California, Davis., Plant Pathology.

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Analysis of microbial communities associated with grapevine in California.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Analysis of microbial communities associated with grapevine in California./
Author:	Parker, Shane Roberts.
Description:	175 p.
Notes:	Source: Dissertation Abstracts International, Volume: 71-12, Section: B, page: 7164.
Contained By:	Dissertation Abstracts International71-12B.
Subject:	Biology, Microbiology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3427402
ISBN:	9781124316031

Analysis of microbial communities associated with grapevine in California.
Parker, Shane Roberts.

Analysis of microbial communities associated with grapevine in California. - 175 p.

Source: Dissertation Abstracts International, Volume: 71-12, Section: B, page: 7164.

Thesis (Ph.D.)--University of California, Davis, 2010.

The rhizosphere microbial community affects plant health, growth, and crop yields. To investigation of the effect of physical and chemical properties and grapevine root presence on the soil bacterial community, soil pits were dug in a vineyard. The culturable bacterial community from each soil horizon was quantified and isolates were identified to analyze the qualitative effect of soil factors on the culturable community. The presence of grape roots significantly increased the bacterial population in some pits and horizons but not others. The inconsistent effect of horizon was without clear physical and chemical properties associations. The community was affected by bulk density, soil horizon, pH, and nutrient concentration. Floor management treatments were examined for effects on the soil nematode community in another conventionally managed vineyard. Treatments were applied to the inter-row floor environment while the row floor environments all received the same treatment. Cover crop use significantly impacted the abundance and biomass of multiple aspects of the nematode community in the inter-row. The in-row community was largely unaffected by the cover treatment. Weed management treatments had few statistical effects. The in-row and inter-row communities differed significantly based on nematode abundance and biomass. The in-row community was dominated by plant parasitic taxa, primarily Criconemoides, while the inter-row community was dominated by bacterivores and fungivores. Treatment effects were largely limited to the inter-row environment suggesting floor management treatments have a limited spatial effect. The bacterial composition of the rhizosphere, endorhizosphere, and scion sap of five grapevine rootstocks with Vitis vinifera 'Barbera' scions was assessed during four phenological stages. Carbon utilization and phospholipid fatty acid profiles of the rhizosphere communities were documented. Significant differences in rhizosphere populations, endorhizosphere populations, and isolation frequency of taxa were found among rootstock genotypes depending on the crop phenology. The effect of phenology also affected the quantitative populations, which were generally lower during dormancy. Crop phenology executed a greater influence of the communities than host genotype or the community composition and C-utilization patterns. Structural differences among the host genotypes were greatest during early bud formation and harvest. Some fatty acids were enrichment during all crop stages.

ISBN: 9781124316031Subjects--Topical Terms:

1017734
Biology, Microbiology.

Analysis of microbial communities associated with grapevine in California.
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245 1 0 $a Analysis of microbial communities associated with grapevine in California.
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500 $a Source: Dissertation Abstracts International, Volume: 71-12, Section: B, page: 7164.
500 $a Adviser: Daniel A. Kluepfel.
502 $a Thesis (Ph.D.)--University of California, Davis, 2010.
520 $a The rhizosphere microbial community affects plant health, growth, and crop yields. To investigation of the effect of physical and chemical properties and grapevine root presence on the soil bacterial community, soil pits were dug in a vineyard. The culturable bacterial community from each soil horizon was quantified and isolates were identified to analyze the qualitative effect of soil factors on the culturable community. The presence of grape roots significantly increased the bacterial population in some pits and horizons but not others. The inconsistent effect of horizon was without clear physical and chemical properties associations. The community was affected by bulk density, soil horizon, pH, and nutrient concentration. Floor management treatments were examined for effects on the soil nematode community in another conventionally managed vineyard. Treatments were applied to the inter-row floor environment while the row floor environments all received the same treatment. Cover crop use significantly impacted the abundance and biomass of multiple aspects of the nematode community in the inter-row. The in-row community was largely unaffected by the cover treatment. Weed management treatments had few statistical effects. The in-row and inter-row communities differed significantly based on nematode abundance and biomass. The in-row community was dominated by plant parasitic taxa, primarily Criconemoides, while the inter-row community was dominated by bacterivores and fungivores. Treatment effects were largely limited to the inter-row environment suggesting floor management treatments have a limited spatial effect. The bacterial composition of the rhizosphere, endorhizosphere, and scion sap of five grapevine rootstocks with Vitis vinifera 'Barbera' scions was assessed during four phenological stages. Carbon utilization and phospholipid fatty acid profiles of the rhizosphere communities were documented. Significant differences in rhizosphere populations, endorhizosphere populations, and isolation frequency of taxa were found among rootstock genotypes depending on the crop phenology. The effect of phenology also affected the quantitative populations, which were generally lower during dormancy. Crop phenology executed a greater influence of the communities than host genotype or the community composition and C-utilization patterns. Structural differences among the host genotypes were greatest during early bud formation and harvest. Some fatty acids were enrichment during all crop stages.
590 $a School code: 0029.
650 4 $a Biology, Microbiology. $3 1017734
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650 4 $a Agriculture, General. $3 1017510
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710 2 $a University of California, Davis. $b Plant Pathology. $3 1676911
773 0 $t Dissertation Abstracts International $g 71-12B.
790 1 0 $a Kluepfel, Daniel A., $e advisor
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791 $a Ph.D.
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