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Salt stress differentially regulates mobilisation of carbon and nitrogen reserves during seedling establishment of Pityrocarpa moniliformis.

التفاصيل البيبلوغرافية
العنوان: Salt stress differentially regulates mobilisation of carbon and nitrogen reserves during seedling establishment of Pityrocarpa moniliformis.
المؤلفون: da Silva HA; Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, Rio Grande do Norte, Brazil., de Oliveira DFA; Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, Rio Grande do Norte, Brazil., Avelino AP; Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, Rio Grande do Norte, Brazil., de Macêdo CEC; Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, Rio Grande do Norte, Brazil., Barros-Galvão T; Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, Rio Grande do Norte, Brazil., Voigt EL; Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, Rio Grande do Norte, Brazil.
المصدر: Plant biology (Stuttgart, Germany) [Plant Biol (Stuttg)] 2019 Nov; Vol. 21 (6), pp. 1110-1118. Date of Electronic Publication: 2019 Jun 30.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Wiley Country of Publication: England NLM ID: 101148926 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1438-8677 (Electronic) Linking ISSN: 14358603 NLM ISO Abbreviation: Plant Biol (Stuttg) Subsets: MEDLINE
أسماء مطبوعة: Publication: Oxford, England : Wiley
Original Publication: Stuttgart : New York, NY : G. Thieme Verlag ; Thieme New York, c1999-
مواضيع طبية MeSH: Carbon/*metabolism , Moniliformis/*metabolism , Nitrogen/*metabolism , Seedlings/*metabolism, Animals ; Cotyledon/drug effects ; Cotyledon/metabolism ; Moniliformis/drug effects ; Salinity ; Seedlings/drug effects ; Sodium/metabolism ; Sodium Chloride/pharmacology
مستخلص: Seedling establishment is a critical step in environment colonisation by higher plants that frequently occurs under adverse conditions. Thus, we carried out an integrated analysis of seedling growth, water status, ion accumulation, reserve mobilisation, metabolite partitioning and hydrolase activity during seedling establishment of the native Caatinga species Piptadenia moniliformis (Benth.) Luckow & R.W. Jobson under salinity. Two-day-old seedlings were cultivated in vitro for 4 days in water agar (control) or supplemented with 50 or 100 mm NaCl. Biochemical determinations were performed according to standard spectrophotometric protocols. We found that 100 mm NaCl stimulated starch degradation, amylase activity and soluble sugar accumulation, but limited storage protein hydrolysis in the cotyledons of P. moniliformis seedlings. Although Na + accumulation in the seedling affected K + partitioning between different organs, it was not possible to associate the salt-induced changes in reserve mobilisation with Na + toxicity, or water status, in the cotyledons. Remarkably, we found that starch content increased in the roots of P. moniliformis seedlings under 100 mm NaCl, probably in response to the toxic effects of Na + . The mobilisation of carbon and nitrogen reserves is independently regulated in P. moniliformis seedlings under salt stress. The salt-induced delay in seedling establishment and the resulting changes in the source-sink relationship may lead to storage protein retention in the cotyledons. Possibly, the intensification of starch mobilisation in the cotyledons supported starch accumulation in the root as a potential mechanism to mitigate Na + toxicity.
(© 2019 German Society for Plant Sciences and The Royal Botanical Society of the Netherlands.)
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معلومات مُعتمدة: Universidade Federal do Rio Grande do Norte; CNPq
فهرسة مساهمة: Keywords: Caatinga; hydrolytic enzymes; reserve mobilisation; salinity; source-sink relationship
المشرفين على المادة: 451W47IQ8X (Sodium Chloride)
7440-44-0 (Carbon)
9NEZ333N27 (Sodium)
N762921K75 (Nitrogen)
تواريخ الأحداث: Date Created: 20190608 Date Completed: 20200203 Latest Revision: 20200203
رمز التحديث: 20240628
DOI: 10.1111/plb.13017
PMID: 31173441
قاعدة البيانات: MEDLINE
الوصف
تدمد:1438-8677
DOI:10.1111/plb.13017