Physiological, Biochemical, and Metabolic Responses to Short and Prolonged Saline Stress in Two Cultivated Cardoon Genotypes.

ABSTRACT: Cultivated cardoon is a multipurpose crop with adaptability to limiting environments. Two genotypes ("Bianco Avorio" and "Spagnolo") were comparatively characterized in response to short and prolonged 100 mM NaCl stress in hydroponics. Salt induced no growth variations between genotypes or symptoms of NaCl toxicity, but boosted ABA accumulation in roots and leaves. Both genotypes had high constitutive phenol content, whose major components were depleted upon 2 days of stress only in "Bianco Avorio". Prolonged stress stimulated accumulation of proline, phenylpropanoids, and related transcripts, and non-enzymatic antioxidant activity. Decreased antioxidant enzymes activities upon short stress did not occur for APX in "Spagnolo", indicating a stronger impairment of enzymatic defenses in "Bian

SUBMITTER: Docimo T 

PROVIDER: S-EPMC7284779 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature