A spermine-resistant mutant of Arabidopsis thaliana displays precocious germination

• Autorzy: Mirza J I , Rehman A.
• Języki publikacji: EN

Abstrakty

EN

From an ethylmethane sulphonate-mutagenized M₂ population of Arabidopsis thaliana L. var Landsberg erecta, a mutant was isolated on the basis of its ability to germinate in the presence of a germination inhibitory concentration (0.35 mM) of spermine. The mutant produced yellowish green seeds that lacked a mucilaginous sheath, exhibited reduced dormancy and were generally viviparous under ambient conditions. Dose-response assays indicated increased resistance of the mutant to spermine but normal sensitivity to spermidine, putrescine and abscisic acid. The spermine resistance and the associated phenotype of the mutant was inherited as a single recessive nuclear mutation. Following the genetic analysis, spermine-resistant mutant has been designated as spr2. The results suggest a role for spermine in seed dormancy.

Słowa kluczowe

EN

spermine; polyamine; Arabidopsis thaliana; mutant; precocious germination; dormancy; germination

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 1998
• Tom: 20
• Numer: 3
• Opis fizyczny: p.235-240,fig.

Twórcy

autor

Mirza J I

• B.Z.University, Multan, Pakistan

autor

Rehman A.

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