Abstract
The severity of Verticillium wilt on cotton caused by defoliating strains of Verticillium dahliae has gradually increased and threatens production worldwide. Identification of the molecular components of leaf defoliation may increase cotton tolerance to V. dahliae. Ethylene, a major player in plant physiological processes, is often associated with senescence and defoliation of plants. We investigated the cotton–V. dahliae interaction with a focus on the role of ethylene in defoliation and defense against V. dahliae. Cotton plants inoculated with V. dahliae isolate V991, a defoliating strain, accumulated more ethylene and showed increased disease symptoms than those inoculated with a non-defoliating strain. In cotton with a transiently silenced ethylene synthesis gene (GhACOs) and signaling gene (GhEINs) during cotton–V. dahliae interaction, ethylene produced was derived from cotton and more ethylene increased cotton susceptibility and defoliation rate. Overexpression of AtCTR1, a negative regulator in ethylene signaling, in cotton reduced sensitivity to ethylene and increased plant resistance to V. dahliae. Collectively, the results indicated precise regulation of ethylene synthesis or signaling pathways improve cotton resistant to Verticillium wilt.
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Claims 7
Claim · model-written summary
Cotton inoculated with the defoliating V. dahliae isolate V991 accumulated more ethylene than with a non-defoliating strain
- Taxon
- Cotton plants
Gossypium hirsutume1 - Material
- isolate V991e1
- Treatment
- inoculated with V. dahliae isolate V991, a defoliating straine1
- Interactor
- V. dahliae
Verticillium dahliaee1pathogen - Compound
- ethylenee1
- Outcome
- ethylenee1
- Direction
- accumulated moree1
- Comparator
- a non-defoliating straine1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cotton plants inoculated with V. dahliae isolate V991, a defoliating strain, accumulated more ethylene and showed increased disease symptoms than those inoculated with a non-defoliating strain”
Claim · model-written summary
Cotton inoculated with the defoliating V. dahliae isolate V991 showed increased disease symptoms compared with a non-defoliating strain
- Taxon
- Cotton plantsGossypium hirsutume1
- Material
- isolate V991e1
- Treatment
- inoculated with V. dahliae isolate V991, a defoliating straine1
- Interactor
- V. dahliaeVerticillium dahliaee1pathogen
- Outcome
- disease symptomse1
- Direction
- increasede1
- Comparator
- a non-defoliating straine1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cotton plants inoculated with V. dahliae isolate V991, a defoliating strain, accumulated more ethylene and showed increased disease symptoms than those inoculated with a non-defoliating strain”
Claim · model-written summary
More ethylene was associated with increased cotton susceptibility and defoliation rate
- Taxon
- cottonGossypium hirsutume3
- Compound
- ethylenee3
- Outcome
- cotton susceptibility and defoliation ratee3
- Direction
- increasede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“more ethylene increased cotton susceptibility and defoliation rate”
Claim · model-written summary
Ethylene produced by cotton plants during V. dahliae infection was derived from the cotton
- Taxon
- cottonGossypium hirsutume2
- Compound
- ethylenee2
- Outcome
- ethylene producede2
- Qualifier
- derived from cottone2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“ethylene produced was derived from cotton”
Claim · model-written summary
Overexpression of AtCTR1 in cotton reduced sensitivity to ethylene
- Taxon
- cottonGossypium hirsutume4
- Treatment
- Overexpression of AtCTR1e4
- Gene
- AtCTR1e4
- Outcome
- sensitivity to ethylenee4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Overexpression of AtCTR1, a negative regulator in ethylene signaling, in cotton reduced sensitivity to ethylene”
Claim · model-written summary
Overexpression of AtCTR1 in cotton increased resistance to V. dahliae
- Taxon
- cottonGossypium hirsutume4
- Treatment
- Overexpression of AtCTR1e4
- Interactor
- V. dahliaeVerticillium dahliaee5pathogen
- Gene
- AtCTR1e4
- Outcome
- plant resistance to V. dahliaee5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Overexpression of AtCTR1, a negative regulator in ethylene signaling, in cotton reduced sensitivity to ethylene”
e5“increased plant resistance to V. dahliae”
Claim · model-written summary
Precise regulation of ethylene synthesis or signalling is proposed to improve cotton resistance to Verticillium wilt
- Taxon
- cottonGossypium hirsutume6
- Compound
- ethylenee6
- Outcome
- resistant to Verticillium wilte6
- Qualifier
- precise regulation of ethylene synthesis or signaling pathwayse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Collectively, the results indicated precise regulation of ethylene synthesis or signaling pathways improve cotton resistant to Verticillium wilt”
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