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Grapevines under drought do not express esca leaf symptoms
- Source :
- Proceedings of the National Academy of Sciences of the United States of America, Proceedings of the National Academy of Sciences of the United States of America, National Academy of Sciences, 2021, 118 (43), pp.e2112825118. ⟨10.1073/pnas.2112825118⟩, Proc Natl Acad Sci U S A
- Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
Abstract
- International audience; In the context of climate change, plant mortality is increasing worldwide in both natural and agroecosystems. However, our understanding of the underlying causes is limited by the complex interactions between abiotic and biotic factors and the technical challenges that limit investigations of these interactions. Here, we studied the interaction between two main drivers of mortality, drought and vascular disease (esca), in one of the world’s most economically valuable fruit crops, grapevine. We found that drought totally inhibited esca leaf symptom expression. We disentangled the plant physiological response to the two stresses by quantifying whole-plant water relations (i.e., water potential and stomatal conductance) and carbon balance (i.e., CO 2 assimilation, chlorophyll, and nonstructural carbohydrates). Our results highlight the distinct physiology behind these two stress responses, indicating that esca (and subsequent stomatal conductance decline) does not result from decreases in water potential and generates different gas exchange and nonstructural carbohydrate seasonal dynamics compared to drought.
- Subjects :
- 0106 biological sciences
Agroecosystem
Stomatal conductance
Climate change
Context (language use)
drought
Biology
01 natural sciences
03 medical and health sciences
chemistry.chemical_compound
Stress, Physiological
[SDV.BV]Life Sciences [q-bio]/Vegetal Biology
Vitis
030304 developmental biology
2. Zero hunger
Abiotic component
carbon balance
0303 health sciences
Multidisciplinary
Biotic component
fungi
Water
food and beverages
vascular disease
15. Life on land
Biological Sciences
Carbon
Droughts
Plant Leaves
[SDV.BV.AP]Life Sciences [q-bio]/Vegetal Biology/Plant breeding
Agronomy
chemistry
plant dieback
13. Climate action
Chlorophyll
abiotic–biotic interactions
Nonstructural carbohydrate
010606 plant biology & botany
Subjects
Details
- Language :
- English
- ISSN :
- 00278424 and 10916490
- Database :
- OpenAIRE
- Journal :
- Proceedings of the National Academy of Sciences of the United States of America, Proceedings of the National Academy of Sciences of the United States of America, National Academy of Sciences, 2021, 118 (43), pp.e2112825118. ⟨10.1073/pnas.2112825118⟩, Proc Natl Acad Sci U S A
- Accession number :
- edsair.doi.dedup.....5b2eb7657318482116ed40f213c713b4