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A spermine-resistant mutant of Arabidopsis thaliana displays precocious germination

100%

Mirza J. I., Rehman A.

Acta Physiologiae Plantarum

1998

tom 20

nr 3

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.

Alternations in phenolic acids content in developing rye grains in normal environment and during enforced dehydration

84%

Weidner S., Fraczek E., Amarowicz R., Abe S.

Acta Physiologiae Plantarum

2001

tom 23

nr 4

Ograniczanie wyników

2 Acta Physiologiae Plantarum

1 Abe S.

1 Amarowicz R.

1 Fraczek E.

1 Mirza J. I.

1 Rehman A.

1 Weidner S.

1 2001

1 1998

Wyniki wyszukiwania

A spermine-resistant mutant of Arabidopsis thaliana displays precocious germination

Alternations in phenolic acids content in developing rye grains in normal environment and during enforced dehydration