Abstract
Diseases and climate change are major factors limiting grape productivity and fruit marketability. Lasiodiplodia theobromae is a fungus of the family Botryosphaeriaceae that causes Botryosphaeria dieback of grapevine worldwide. Abiotic stress may change host vitality and impact susceptibility to the pathogen and/or change the pathogen’s life cycle. However, the interaction between both stress drivers is poorly understood for woody plants. We addressed the hypothesis that distinct morpho-physiological and biochemical responses are induced in grapevine (Vitis vinifera)–L. theobromae interactions depending on when water deficits are imposed. Grapevines were submitted to water deficit either before or after fungus inoculation. Water deficit led to the reduction of the net photosynthetic rate, stomatal conductance, and transpiration rate, and increased the abscisic acid concentration regardless of fungal inoculation. L. theobromae inoculation before water deficit reduced plant survival by 50% and resulted in the accumulation of jasmonic acid and reductions in malondialdehyde levels. Conversely, grapevines inoculated after water deficit showed an increase in proline and malondialdehyde content and all plants survived. Overall, grapevines responded differently to the primary stress encountered, with consequences in their physiological responses. This study reinforces the importance of exploring the complex water deficit timing × disease interaction and the underlying physiological responses involved in grapevine performance.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
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Claims 8
Claim · model-written summary
Water deficit reduced net photosynthetic rate, stomatal conductance and transpiration rate regardless of inoculation.
- Treatment
- Water deficite0
- Outcome
- net photosynthetic rate, stomatal conductance, and transpiration ratee0
- Direction
- reductione0
- Qualifier
- regardless of fungal inoculatione0
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit led to the reduction of the net photosynthetic rate, stomatal conductance, and transpiration rate, and increased the abscisic acid concentration regardless of fungal inoculation”
e1“grapevine (Vitis vinifera)–L. theobromae interactions”
Claim · model-written summary
Water deficit increased abscisic acid concentration regardless of inoculation.
- Treatment
- Water deficite0
- Outcome
- abscisic acid concentratione0
- Direction
- increasede0
- Qualifier
- regardless of fungal inoculatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit led to the reduction of the net photosynthetic rate, stomatal conductance, and transpiration rate, and increased the abscisic acid concentration regardless of fungal inoculation”
e1“grapevine (Vitis vinifera)–L. theobromae interactions”
Claim · model-written summary
Inoculation before water deficit reduced grapevine survival by 50%.
- Treatment
- L. theobromae inoculation before water deficite0
- Interactor
- L. theobromae
_Lasiodiplodia_theobromae_sporulating_in_fruit_lesion.jpg?width=60)
Lasiodiplodia theobromaee0pathogen - Outcome
- plant survivale0
- Direction
- reducede0
- Value
- 50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Lasiodiplodia_theobromae_sporulating_in_fruit_lesion.jpg?width=500)
Verbatim
e0“L. theobromae inoculation before water deficit reduced plant survival by 50%”
e1“grapevine (Vitis vinifera)–L. theobromae interactions”
Claim · model-written summary
Inoculation before water deficit increased jasmonic acid accumulation.
- Treatment
- L. theobromae inoculation before water deficite0
- Interactor
- L. theobromaeLasiodiplodia theobromaee0pathogen
- Outcome
- accumulation of jasmonic acide0
- Direction
- accumulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“L. theobromae inoculation before water deficit reduced plant survival by 50% and resulted in the accumulation of jasmonic acid and reductions in malondialdehyde levels”
e1“grapevine (Vitis vinifera)–L. theobromae interactions”
Claim · model-written summary
Inoculation before water deficit reduced malondialdehyde levels.
- Treatment
- L. theobromae inoculation before water deficite0
- Interactor
- L. theobromaeLasiodiplodia theobromaee0pathogen
- Outcome
- malondialdehyde levelse0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“L. theobromae inoculation before water deficit reduced plant survival by 50% and resulted in the accumulation of jasmonic acid and reductions in malondialdehyde levels”
e1“grapevine (Vitis vinifera)–L. theobromae interactions”
Claim · model-written summary
Inoculation after water deficit increased proline content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grapevines inoculated after water deficit showed an increase in proline and malondialdehyde content and all plants survived”
Claim · model-written summary
Inoculation after water deficit increased malondialdehyde content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grapevines inoculated after water deficit showed an increase in proline and malondialdehyde content and all plants survived”
Claim · model-written summary
All grapevines inoculated after water deficit survived.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grapevines inoculated after water deficit showed an increase in proline and malondialdehyde content and all plants survived”
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