Priming avocado with sodium hydrosulfide prior to frost conditions induces the expression of genes involved in protection and stress responses

• DOI: 10.1111/ppl.14291
• Publication Date: 2024-04-17T06:25:25Z
• Authors: Vivekanand Tiwari; Yuval Bussi; Itzhak Kamara; Adi Faigenboim; Vered Irihimovitch; Dana Charuvi
• Keywords: Sodium hydrosulfide; Frost (temperature); Priming (agriculture)

Priming plants with chemical agents has been extensively investigated as a means for improving their tolerance to many biotic and abiotic stresses. Earlier, we showed that priming young avocado (Persea americana Mill cv. 'Hass') trees sodium hydrosulfide (NaHS), donor of hydrogen sulfide, improves the response photosynthesis simulated frost (cold followed by high light) conditions. In current study, performed transcriptome analysis gain insight into molecular 'Hass' leaves frost, or without NaHS priming. The revealed 2144 (down-regulated) 2064 (up-regulated) differentially expressed genes (DEGs) common both non-primed primed trees. Non-primed had 697 (down) 559 (up) unique DEGs, while exhibited 1395 1385 DEGs. We focus on changes in expression patterns encoding proteins involved photosynthesis, carbon cycle, protective functions, biosynthesis isoprenoids abscisic acid (ABA), well ABA-regulated genes. Notably, differential results depict enhanced highlight gene Amongst these are up-regulated pathogenesis-related proteins, heat shock enzymes ABA metabolism, ABA-induced transcription factors. Extending experiments field conditions, which benefit physiology following chilling, suggests it can be possible improve trees' cold stress under natural winter