High temperature effects on photosynthetic activity of two tomato cultivars with different heat susceptibility

Camejo, Daymi; Rodrı́guez, P.; Jiménez, M.N.; Dell'Amico, J. M.; Torrecillas, A.; Alarcón, Juan José

doi:10.1016/j.jplph.2004.07.014

Cited by 520 publications

(379 citation statements)

References 36 publications

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“…The impaired chlorophyll biosynthesis can be part of a protective mechanism against stress during limited time periods. A high temperature provokes severe damage to the photosynthetic apparatus (Camejo et al 2005). A time-dependent decrease of chlorophyll content induced by inoculation, cold and especially heat stress in our study seems to be connected with changes in photosynthetic parameters of Solanum spp.…”

Section: The Effect Of Extreme Temperatures On Leaves and Pathogensupporting

confidence: 57%

Effect of extreme temperatures on powdery mildew development and Hsp70 induction in tomato and wild Solanum spp.

Kubienová¹,

Sedlářová²,

Vítečková-Wünschová³

et al. 2013

Plant Prot. Sci.

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Kubienová L., Sedlářová M., Wünschová A., Piterková J., Luhová L., Mieslerová B., Lebeda A., Navrátil M., Petřivalský M. Changes in Hsp70 gene expression and protein level were studied in three Solanum spp. genotypes in response to short-term high and low temperatures and to infection by powdery mildew. Development of Oidium neolycopersici was compared on plant leaves and leaf discs with regard to the influence of temperature. Heat and especially cold pretreatment of host tissues inhibited pathogenesis and decreased chlorophyll concentration. Exposure to heat increased Hsp70 (70 kDa heat shock proteins) content in all three genotypes of Solanum spp., whereas the infection induced the accumulation of Hsp70 only in susceptible S. lycopersicum. These results are in accordance with the suggested role of Hsp70 chaperons in plant responses to metabolic pathway disturbances triggered by pathogen challenge.

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Section: The Effect Of Extreme Temperatures On Leaves and Pathogensupporting

confidence: 57%

Effect of extreme temperatures on powdery mildew development and Hsp70 induction in tomato and wild Solanum spp.

Kubienová¹,

Sedlářová²,

Vítečková-Wünschová³

et al. 2013

Plant Prot. Sci.

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“…Severe heat stress often dramatically reduces leaf photosynthesis (Camejo et al, 2005). Thus, it is important to determine whether decreased fruit and seed set by heat stress is due to source or sink limitation.…”

Section: Cwin Promotes Fruit Set Under Lmhs By Increasing Sink Strengmentioning

confidence: 99%

Cell Wall Invertase Promotes Fruit Set under Heat Stress by Suppressing ROS-Independent Cell Death

2016

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Reduced cell wall invertase (CWIN) activity has been shown to be associated with poor seed and fruit set under abiotic stress. Here, we examined whether genetically increasing native CWIN activity would sustain fruit set under long-term moderate heat stress (LMHS), an important factor limiting crop production, by using transgenic tomato (Solanum lycopersicum) with its CWIN inhibitor gene silenced and focusing on ovaries and fruits at 2 d before and after pollination, respectively. We found that the increase of CWIN activity suppressed LMHS-induced programmed cell death in fruits. Surprisingly, measurement of the contents of H 2 O 2 and malondialdehyde and the activities of a cohort of antioxidant enzymes revealed that the CWINmediated inhibition on programmed cell death is exerted in a reactive oxygen species-independent manner. Elevation of CWIN activity sustained Suc import into fruits and increased activities of hexokinase and fructokinase in the ovaries in response to LMHS. Compared to the wild type, the CWIN-elevated transgenic plants exhibited higher transcript levels of heat shock protein genes Hsp90 and Hsp100 in ovaries and HspII17.6 in fruits under LMHS, which corresponded to a lower transcript level of a negative auxin responsive factor IAA9 but a higher expression of the auxin biosynthesis gene ToFZY6 in fruits at 2 d after pollination. Collectively, the data indicate that CWIN enhances fruit set under LMHS through suppression of programmed cell death in a reactive oxygen species-independent manner that could involve enhanced Suc import and catabolism, HSP expression, and auxin response and biosynthesis.

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“…Enang et al (2015) observed heterobeltiosis for plant height, number of flower clusters, number of fruit per plant and number of leaves among hybrids for heat tolerant. Camejo et al (2005) reported that, the optimal temperatures required for tomato cultivation are between 25-30 o C during daytime and 20 o C during the dark period and an increase of 2-4 o C over the optimal temperature adversely affects gamete development and inhibits the ability of pollinated flowers to develop into fruits and thus reduced fruit yield and size (Peet et. al., 1997, Sato, et.…”

Section: Introductionmentioning

confidence: 99%

Heterosis for Fruit Yield and Heat Tolerance Traits in Tomato (Lycopersicon Lycopersicum Mill.) Under Field Conditions

Hamisu¹,

Ado²,

Yeye³

et al. 2018

JAS

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rainy season to estimates heterosis for fruit yield and heat tolerance traits of tomato under field conditions. The experiment comprised two heat tolerant (Icrixina and Rio Grande) and four heat susceptible tomato (Tima, Tropimech, Petomech and Roma Savana) which were crossed Journal of Agricultural Studies ISSN 2166-0379 2018 http://jas.macrothink.org 50 using half diallel mating design in the screen house. The resultant 15 hybrids, their parental lines along with four checks were laid out in partially balanced lattice design with three replications. Analysis of variance revealed significant variation among the genotypes for all traits except fruit diameter and cell membrane thermostability, indicating sufficient variability existed among the genotypes. The cross combinations Icrixina × Rio Grande, Icrixina × Tima, Icrixina × Roma Savana and Icrixina × Petomech were found heterotic over better parent for fruit yield and heat tolerance traits (Number of branches per plant, number of clusters per plant, number of flowers per cluster, number of fruits per cluster, number of fruits per plant, percentage fruit set and chlorophyll content) among the hybrids. These hybrids were superior over better parent have the potentiality to be exploited for developing commercial heat tolerant tomato hybrid under field conditions.

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High temperature effects on photosynthetic activity of two tomato cultivars with different heat susceptibility

Cited by 520 publications

References 36 publications

Effect of extreme temperatures on powdery mildew development and Hsp70 induction in tomato and wild Solanum spp.

Effect of extreme temperatures on powdery mildew development and Hsp70 induction in tomato and wild Solanum spp.

Cell Wall Invertase Promotes Fruit Set under Heat Stress by Suppressing ROS-Independent Cell Death

Heterosis for Fruit Yield and Heat Tolerance Traits in Tomato (Lycopersicon Lycopersicum Mill.) Under Field Conditions

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