Linking diverse salinity responses of 14 almond rootstocks with physiological, biochemical, and genetic determinants

Autor:	Devinder Sandhu, Biswa R. Acharya, Manju V. Pudussery, Thomas Forest, Donald L. Suarez, Xuan Liu, Amita Kaundal, Jorge F. S. Ferreira
Rok vydání:	2020
Předmět:	0106 biological sciences 0301 basic medicine Agricultural Irrigation Genotype chemistry.chemical_element Biology Calcium Photosynthesis 01 natural sciences Plant Roots Salt Stress Article 03 medical and health sciences Prunus Chlorides Genetics Proline Hybrid Multidisciplinary Sodium food and beverages Saline water Prunus dulcis Salinity Plant Leaves Horticulture 030104 developmental biology chemistry Rootstock Plant sciences 010606 plant biology & botany
Zdroj:	Scientific Reports
ISSN:	2045-2322
Popis:	Fourteen commercial almond rootstocks were tested under five types of irrigation waters to understand the genetic, physiological, and biochemical bases of salt-tolerance mechanisms. Treatments included control (T1) and four saline water treatments dominant in sodium-sulfate (T2), sodium-chloride (T3), sodium-chloride/sulfate (T4), and calcium/magnesium-chloride/sulfate (T5). T3 caused the highest reduction in survival rate and trunk diameter, followed by T4 and T2, indicating that Na and, to a lesser extent, Cl were the most toxic ions to almond rootstocks. Peach hybrid (Empyrean 1) and peach-almond hybrids (Cornerstone, Bright’s Hybrid 5, and BB 106) were the most tolerant to salinity. Rootstock’s performance under salinity correlated highly with its leaf Na and Cl concentrations, indicating that Na+ and Cl- exclusion is crucial for salinity tolerance in Prunus. Photosynthetic rate correlated with trunk diameter and proline leaf ratio (T3/T1) significantly correlated with the exclusion of Na+ and Cl-, which directly affected the survival rate. Expression analyses of 23 genes involved in salinity stress revealed that the expression differences among genotypes were closely associated with their performance under salinity. Our genetic, molecular, and biochemical analyses allowed us to characterize rootstocks based on component traits of the salt-tolerance mechanisms, which may facilitate the development of highly salt-tolerant rootstocks.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::526ce6fea04c5ae0fe527219e9c64f61 https://pubmed.ncbi.nlm.nih.gov/33273661 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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