Field performance of cucurbit and tomato plants colonized with a nonpathogenic, mutualistic mutant (path-1) of Colletotrichum magna (Teleomorph: Glomerella magna; Jenkins & Winstead)

Regina S. Redman, Marilyn J. Roossinck, Sean Maher, Quint C. Andrews, William L. Schneider, Rusty J. Rodriguez

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Path-1 is a UV-induced non-pathogenic mutant of a virulent Colletotrichum magna isolate that establishes mutualistic symbioses with cucurbit and tomato species. Under laboratory conditions, this mutualism results in plant growth enhancement, drought tolerance, and disease protection against fungal pathogens. This study focuses on the efficacy of this symbiosis and the symbiotic lifestyle expressed by path-1 under field conditions in the absence of disease stress. The effects of colonization by path-1 on fruit yields and growth was measured in field plots with four cucurbit species including four watermelon cultivars, and two tomato cultivars, over four growing seasons. The persistence of the symbiosis, extent of colonization, and path-1 transmission were also assessed. Yields from path-1 infected plants were equivalent to or greater than yields from non-inoculated control plants and path-1 systemically colonized plants throughout each growing season. Path-1 also increased the growth rates of tomato plants and was not transmitted to uncolonized plants. The results indicate that there are no metabolic costs of this symbiosis and the symbiosis is maintained under field conditions.

Original languageEnglish (US)
Pages (from-to)55-70
Number of pages16
JournalSymbiosis
Volume32
Issue number1
StatePublished - 2002

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Phyllachorales
Glomerella
Colletotrichum
Symbiosis
Cucurbitaceae
Lycopersicon esculentum
symbiosis
tomatoes
mutants
growing season
Growth
Citrullus
mutualism
watermelons
cultivars
fruit yield
drought tolerance
Droughts
lifestyle
Life Style

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)
  • Microbiology

Cite this

@article{156fc209b1fb49cead35a6ebf41795d8,
title = "Field performance of cucurbit and tomato plants colonized with a nonpathogenic, mutualistic mutant (path-1) of Colletotrichum magna (Teleomorph: Glomerella magna; Jenkins & Winstead)",
abstract = "Path-1 is a UV-induced non-pathogenic mutant of a virulent Colletotrichum magna isolate that establishes mutualistic symbioses with cucurbit and tomato species. Under laboratory conditions, this mutualism results in plant growth enhancement, drought tolerance, and disease protection against fungal pathogens. This study focuses on the efficacy of this symbiosis and the symbiotic lifestyle expressed by path-1 under field conditions in the absence of disease stress. The effects of colonization by path-1 on fruit yields and growth was measured in field plots with four cucurbit species including four watermelon cultivars, and two tomato cultivars, over four growing seasons. The persistence of the symbiosis, extent of colonization, and path-1 transmission were also assessed. Yields from path-1 infected plants were equivalent to or greater than yields from non-inoculated control plants and path-1 systemically colonized plants throughout each growing season. Path-1 also increased the growth rates of tomato plants and was not transmitted to uncolonized plants. The results indicate that there are no metabolic costs of this symbiosis and the symbiosis is maintained under field conditions.",
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journal = "Symbiosis",
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Field performance of cucurbit and tomato plants colonized with a nonpathogenic, mutualistic mutant (path-1) of Colletotrichum magna (Teleomorph : Glomerella magna; Jenkins & Winstead). / Redman, Regina S.; Roossinck, Marilyn J.; Maher, Sean; Andrews, Quint C.; Schneider, William L.; Rodriguez, Rusty J.

In: Symbiosis, Vol. 32, No. 1, 2002, p. 55-70.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Rodriguez, Rusty J.

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AB - Path-1 is a UV-induced non-pathogenic mutant of a virulent Colletotrichum magna isolate that establishes mutualistic symbioses with cucurbit and tomato species. Under laboratory conditions, this mutualism results in plant growth enhancement, drought tolerance, and disease protection against fungal pathogens. This study focuses on the efficacy of this symbiosis and the symbiotic lifestyle expressed by path-1 under field conditions in the absence of disease stress. The effects of colonization by path-1 on fruit yields and growth was measured in field plots with four cucurbit species including four watermelon cultivars, and two tomato cultivars, over four growing seasons. The persistence of the symbiosis, extent of colonization, and path-1 transmission were also assessed. Yields from path-1 infected plants were equivalent to or greater than yields from non-inoculated control plants and path-1 systemically colonized plants throughout each growing season. Path-1 also increased the growth rates of tomato plants and was not transmitted to uncolonized plants. The results indicate that there are no metabolic costs of this symbiosis and the symbiosis is maintained under field conditions.

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