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231223s2005 xx ||||| 00| ||eng c |
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|a pubmed24n0516.xml
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|a (DE-627)NLM154823430
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|a (NLM)15832680
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Camejo, Daymi
|e verfasserin
|4 aut
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|a High temperature effects on photosynthetic activity of two tomato cultivars with different heat susceptibility
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|c 2005
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 12.05.2005
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|a Date Revised 07.12.2022
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|a published: Print
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|a Citation Status MEDLINE
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|a The functional activities of the photosynthetic apparatus of two tomato cultivars of different thermotolerance were investigated after a short period of high temperature treatment. Seedlings of two tomato genotypes, Lycopersicon esculentum var. Campbell-28 and the wild thermotolerant Nagcarlang, were grown under a photoperiod of 16h at 25 degrees C and dark period of 8h at 20 degrees C. At the fourth true leaf stage, a group of plants was exposed to heat stress of 45 degrees C for 2 h. The heat shock treatment caused important reductions of the net photosynthetic rate (Pn) of Campbell-28 plants due to non-stomatal components. These non-stomatal effects were not evident in Nagcarlang-treated plants. This reduction in the CO2 assimilation rate observed in Campbell-28 was generated by affections in the Calvin cycle and also in the PSII functioning. No changes in these parameters were observed in the thermotolerant genotype after the stress. Injury to the plasma membrane because of the heat stress was evident only in the Campbell-28 genotype. Heat led to a sun-type adaptation response of the photosynthesis pigment apparatus for the Nagcarlang genotype, but not for Campbell-28, and thus an increase in chlorophyll a/b ratio and a decrease in chlorophyll/carotenoid ratio were shown in Nagcarlang stressed plants
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|a Comparative Study
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Electrolytes
|2 NLM
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|a Rodríguez, Pedro
|e verfasserin
|4 aut
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|a Morales, Ma Angeles
|e verfasserin
|4 aut
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|a Dell'Amico, José Miguel
|e verfasserin
|4 aut
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|a Torrecillas, Arturo
|e verfasserin
|4 aut
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|a Alarcón, Juan José
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 162(2005), 3 vom: 01. März, Seite 281-9
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
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|g volume:162
|g year:2005
|g number:3
|g day:01
|g month:03
|g pages:281-9
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|a GBV_USEFLAG_A
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|a GBV_ILN_350
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|a AR
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|d 162
|j 2005
|e 3
|b 01
|c 03
|h 281-9
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