دورية أكاديمية
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Deciphering desiccation tolerance in wild eggplant species: insights from chlorophyll fluorescence dynamics.

التفاصيل البيبلوغرافية
العنوان: Deciphering desiccation tolerance in wild eggplant species: insights from chlorophyll fluorescence dynamics.
المؤلفون: Khapte PS; ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra, 413115, India. khaptepratap@gmail.com., Changan SS; ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra, 413115, India., Kumar P; ICAR-Central Arid Zone Research Institute, Jodhpur, Rajasthan, 342003, India., Singh TH; ICAR-Indian Institute of Horticultural Research, Bengaluru, Karnataka, 560089, India., Singh AK; ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra, 413115, India., Rane J; ICAR-Central Institute for Arid Horticulture, Bikaner, Rajasthan, 334006, India., Reddy KS; ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra, 413115, India.
المصدر: BMC plant biology [BMC Plant Biol] 2024 Jul 25; Vol. 24 (1), pp. 702. Date of Electronic Publication: 2024 Jul 25.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: BioMed Central Country of Publication: England NLM ID: 100967807 Publication Model: Electronic Cited Medium: Internet ISSN: 1471-2229 (Electronic) Linking ISSN: 14712229 NLM ISO Abbreviation: BMC Plant Biol Subsets: MEDLINE
أسماء مطبوعة: Original Publication: London : BioMed Central, [2001-
مواضيع طبية MeSH: Chlorophyll*/metabolism , Solanum melongena*/physiology , Solanum melongena*/metabolism, Fluorescence ; Plant Leaves/physiology ; Plant Leaves/metabolism ; Desiccation ; Photosystem II Protein Complex/metabolism ; Photosynthesis/physiology ; Stress, Physiological ; Droughts ; Dehydration ; Species Specificity
مستخلص: Background: Climate change exacerbates abiotic stresses, which are expected to intensify their impact on crop plants. Drought, the most prevalent abiotic stress, significantly affects agricultural production worldwide. Improving eggplant varieties to withstand abiotic stress is vital due to rising drought from climate change. Despite the diversity of wild eggplant species that thrive under harsh conditions, the understanding of their drought tolerance mechanisms remains limited. In the present study, we used chlorophyll fluorescence (ChlaF) imaging, which reveals a plant's photosynthetic health, to investigate desiccation tolerance in eggplant and its wild relatives. Conventional fluorescence measurements lack spatial heterogeneity, whereas ChlaF imaging offers comprehensive insights into plant responses to environmental stresses. Hence, employing noninvasive imaging techniques is essential for understanding this heterogeneity.
Results: Desiccation significantly reduced the leaf tissue moisture content (TMC) across species. ChlaF and TMC displayed greater photosystem II (PSII) efficiency after 54 h of desiccation in S. macrocarpum, S. torvum, and S. indicum, with S. macrocarpum demonstrating superior efficiency due to sustained fluorescence. PSII functions declined gradually in S. macrocarpum and S. torvum, unlike those in other species, which exhibited abrupt declines after 54 h of desiccation. However, after 54 h, PSII efficiency remained above 50% of its initial quantum yield in S. macrocarpum at 35% leaf RWC (relative water content), while S. torvum and S. indicum displayed 50% decreases at 31% and 33% RWC, respectively. Conversely, the susceptible species S. gilo and S. sisymbriifolium exhibited a 50% reduction in PSII function at an early stage of 50% RWC, whereas in S. melongena, this reduction occurred at 40% RWC.
Conclusion: Overall, our study revealed notably greater leaf desiccation tolerance, especially in S. macrocarpum, S. torvum, and S. indicum, attributed to sustained PSII efficiency at low TMC levels, indicating that these species are promising sources of drought tolerance.
(© 2024. The Author(s).)
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فهرسة مساهمة: Keywords: Brinjal; Dehydration tolerance; Leaf desiccation; Photosystem II efficiency; Wild species
المشرفين على المادة: 1406-65-1 (Chlorophyll)
0 (Photosystem II Protein Complex)
تواريخ الأحداث: Date Created: 20240725 Date Completed: 20240726 Latest Revision: 20240728
رمز التحديث: 20240728
مُعرف محوري في PubMed: PMC11270916
DOI: 10.1186/s12870-024-05430-9
PMID: 39054439
قاعدة البيانات: MEDLINE
الوصف
تدمد:1471-2229
DOI:10.1186/s12870-024-05430-9