Fruit Quality Changes during Ripening in Some Tomato Accessions

Hassan, A. A.; Abdel-Ati, K. E. A.; Shehata, A. S.F.

doi:10.12816/0011722

Cited by 2 publications

(2 citation statements)

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“…1). We have also demonstrated that Tamaulipas, which like Nagcarlang and Malintka is a cultivar noted for its ability to maintain higher fruit production during exceptionally hot growing seasons 63,64,68,70,72,73 , is able to fertilize seeds and set fruit when stress is only applied during the pollen tube growth phase (Fig. 1) and has enhanced pollen tube performance under HT in all of the assays we performed (Fig.…”

Section: Pathways Controlling Pollen Tube Growth and Cell Wall Synthe...mentioning

confidence: 57%

Enhanced pollen tube performance at high temperature contributes to thermotolerant fruit production in tomato

Yimga Ouonkap,

Palaniappan,

Pryze

et al. 2024

Preprint

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Rising temperature extremes during critical reproductive periods threaten the yield of major grain and fruit crops. Flowering plant reproduction depends on development of sufficient numbers of pollen grains and on their ability to generate a cellular extension, the pollen tube, which elongates through the pistil to deliver sperm cells to female gametes for double fertilization. These critical phases of the life cycle are sensitive to temperature and limit productivity under high temperature (HT). Previous studies have investigated the effects of HT on pollen development, but little is known about how HT applied during the pollen tube growth phase affects fertility. Here, we used tomato as a model fruit crop to determine how HT affects the pollen tube growth phase, taking advantage of cultivars noted for fruit production in exceptionally hot growing seasons. We found that exposure to HT solely during the pollen tube growth phase limits fruit biomass and seed set more significantly in thermosensitive cultivars than in thermotolerant cultivars. Importantly, we found that pollen tubes from the thermotolerant Tamaulipas cultivar have enhanced growthin vivoandin vitrounder HT. Analysis of the pollen tube transcriptome’s response to HT allowed us to develop hypotheses for the molecular basis of cellular thermotolerance in the pollen tube and we define two response modes (enhanced induction of stress responses, and higher basal levels of growth pathways repressed by heat stress) associated with reproductive thermotolerance. Importantly, we define key components of the pollen tube stress response identifying enhanced ROS homeostasis and pollen tube callose synthesis and deposition as important components of reproductive thermotolerance in Tamaulipas. Our work identifies the pollen tube growth phase as a viable target to enhance reproductive thermotolerance and delineates key pathways that are altered in crop varieties capable of fruiting under HT conditions.Abstract Figure

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Section: Pathways Controlling Pollen Tube Growth and Cell Wall Synthe...mentioning

confidence: 57%

Enhanced pollen tube performance at high temperature contributes to thermotolerant fruit production in tomato

Yimga Ouonkap,

Palaniappan,

Pryze

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…(Shehata and Hassan 2023). Hassan et al, (2023) found that, the efficacy of some agrochemicals i.e., salicylic acid, lemongrass oil, thyme oil, Imazalil (fungicide) and the biocontrol agent such as Biocontrol T34 (Trichoderma asperellum strain T34) against fruit rot of pear and their effect on fruit quality. All treatments kept fruit quality parameters and revealed significant effect considering total soluble solids, total phenolic content, titratable acidity, fruit firmness, polyphenol oxidase activity and peroxidase activity.…”

Section: Discussionmentioning

confidence: 99%