Interactive effects of elevated CO2 concentration and combined heat and drought stress on tomato photosynthesis
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Interactive effects of elevated CO2 concentration and combined heat and drought stress on tomato photosynthesis. / Zhou, Rong; Yu, Xiaqing; Wen, Junqin; Jensen, Nikolaj Bjerring; dos Santos, Thayna Mendanha; Wu, Zhen; Rosenqvist, Eva; Ottosen, Carl-Otto.
In: BMC Plant Biology, Vol. 20, No. 1, 260, 2020.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Interactive effects of elevated CO2 concentration and combined heat and drought stress on tomato photosynthesis
AU - Zhou, Rong
AU - Yu, Xiaqing
AU - Wen, Junqin
AU - Jensen, Nikolaj Bjerring
AU - dos Santos, Thayna Mendanha
AU - Wu, Zhen
AU - Rosenqvist, Eva
AU - Ottosen, Carl-Otto
PY - 2020
Y1 - 2020
N2 - Background Extreme weather events are predicted to increase, such as combined heat and drought. The CO2 concentration ([CO2]) is predicted to approximately double by 2100. We aim to explore how tomato physiology, especially photosynthesis, is affected by combined heat and drought under elevated [CO2] (e [CO2]). Results Two genotypes, 'OuBei' ('OB', Solanum lycopersicum) and 'LA2093' (S. pimpinellifolium) were grown at a [CO2] (atmospheric [CO2], 400 ppm) and e [CO2] (800 ppm), respectively. The 27-days-old seedlings were treated at 1) a [CO2], 2) a [CO2] + combined stress, 3) e [CO2] and 4) e [CO2] + combined stress, followed by recovery. The P-N (net photosynthetic rate) increased at e [CO2] as compared with a [CO2] and combined stress inhibited the P-N. Combined stress decreased the F-v/F-m (maximum quantum efficiency of photosystem II) of 'OB' at e [CO2] and that of 'LA2093' in regardless of [CO2]. Genotypic difference was observed in the e [CO2] effect on the gas exchange, carbohydrate accumulation, pigment content and dry matter accumulation. Conclusions Short-term combined stress caused reversible damage on tomato while the e [CO2] alleviated the damage on photosynthesis. However, the e [CO2] cannot be always assumed have positive effects on plant growth during stress due to increased water consumption. This study provided insights into the physiological effects of e [CO2] on tomato growth under combined stress and contributed to tomato breeding and management under climate change.
AB - Background Extreme weather events are predicted to increase, such as combined heat and drought. The CO2 concentration ([CO2]) is predicted to approximately double by 2100. We aim to explore how tomato physiology, especially photosynthesis, is affected by combined heat and drought under elevated [CO2] (e [CO2]). Results Two genotypes, 'OuBei' ('OB', Solanum lycopersicum) and 'LA2093' (S. pimpinellifolium) were grown at a [CO2] (atmospheric [CO2], 400 ppm) and e [CO2] (800 ppm), respectively. The 27-days-old seedlings were treated at 1) a [CO2], 2) a [CO2] + combined stress, 3) e [CO2] and 4) e [CO2] + combined stress, followed by recovery. The P-N (net photosynthetic rate) increased at e [CO2] as compared with a [CO2] and combined stress inhibited the P-N. Combined stress decreased the F-v/F-m (maximum quantum efficiency of photosystem II) of 'OB' at e [CO2] and that of 'LA2093' in regardless of [CO2]. Genotypic difference was observed in the e [CO2] effect on the gas exchange, carbohydrate accumulation, pigment content and dry matter accumulation. Conclusions Short-term combined stress caused reversible damage on tomato while the e [CO2] alleviated the damage on photosynthesis. However, the e [CO2] cannot be always assumed have positive effects on plant growth during stress due to increased water consumption. This study provided insights into the physiological effects of e [CO2] on tomato growth under combined stress and contributed to tomato breeding and management under climate change.
KW - Tomato
KW - Elevated CO2 concentration
KW - Combined heat and drought
KW - Recovery
KW - Plant physiology
KW - LEAF GAS-EXCHANGE
KW - PLANT WATER RELATIONS
KW - CHLOROPHYLL FLUORESCENCE
KW - ARABIDOPSIS-THALIANA
KW - GENE-EXPRESSION
KW - ATMOSPHERIC CO2
KW - ABIOTIC STRESS
KW - USE EFFICIENCY
KW - RESPONSES
KW - TOLERANCE
U2 - 10.1186/s12870-020-02457-6
DO - 10.1186/s12870-020-02457-6
M3 - Journal article
C2 - 32505202
VL - 20
JO - BMC Plant Biology
JF - BMC Plant Biology
SN - 1471-2229
IS - 1
M1 - 260
ER -
ID: 249486781