Increase in nucleic acid synthesizing capacity during cold treatment of dormant pear embryos

Khan, Anwar A.; Heit, C. E.; Lippold, P. C.

doi:10.1016/0006-291x(68)90583-4

Cited by 28 publications

(10 citation statements)

References 12 publications

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“…Several authors have described increases in protein and RNA synthesis in the living bark of deciduous woody species in the autumn during cold acclimation (4,5,10,11,15.16,17, 18, 19). Similarly, increases in proteins and RNA have been demonstrated in seeds and seedlings undergoing vernalization (7,8,22).…”

Section: Introductionmentioning

confidence: 89%

“…There appears to be a general agreement, in the literature, that increased RNA and proteins synthesis may be part of the resistance mechanism of plants to low temperatures. Ribosomal RNA has been shown to be the most responsive class of RNA to the physiological stimuli which bring about acclimation (2,5,8,11). Clayton and Li (3) and Li and Weiser (12) have shown that low temperature and to a lesser extent short photoperiods, bring about an increased level of rRNA in potato leaves.…”

Section: Diseussionmentioning

confidence: 99%

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RNA Synthesis in Spring and Winter Wheat during Cold Acclimation

Sarhan¹,

Daoust²

1975

Physiologia Plantarum

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Marked increases were obtained in the levels of ribosomal and soluble RNA fractions in winter wheat submitted to cold acclimation temperatures. In comparison, the change in the rRNA and sRNA of spring wheat, grown under similar conditions, were less pronounced.With the cold acclimation treatment, sRNA accumulated by winter wheat shows an important change in its (G + C)/ (A -f-V + U) ratio, whereas no change in base composition is observed in the sRNA of spring wheat or the rRNA of both spring and winter wheat.It is suggested that in winter wheat, cold acclimation temperatures potentiate increased synthesis of specific sRNAs, this possibly being part of the increased capacity for protein synthesis associated with cold acclimation.

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Section: Introductionmentioning

confidence: 89%

Section: Diseussionmentioning

confidence: 99%

RNA Synthesis in Spring and Winter Wheat during Cold Acclimation

Sarhan¹,

Daoust²

1975

Physiologia Plantarum

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“…Thus, it clcarly appcars that changes obscrvcd in apple during a cold humid treatmcnt wcre relatcd to the onsct of germination. Thcse rcsults suggest that analogous changes in embryos of othcr dormant spccics (Pollock and Olnet, 19S9 ;Wood and Brabeer, 1967 ;Khan et al, 1968 ;Forgeur, 1980) are also rclated to the onset of germination and are not reflecting dormancy removal itself. Furthcrmore, it appears that mcchanisms involvcd in dormancy removal are largely unknown.…”

Section: Hu11ementioning

confidence: 98%

Evénements cellulaires associés à la germination de l'embryon de Pommier au cours d'un traitement par le froid humide

Real¹,

Perino²,

Bouvier-Durand³

1991

Bulletin de la Société Botanique de France. Lettres Botaniques

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“…Following such application, RNA synthesis increases as a result of increased RNA polymerase activity and DNA template availability (8,9) indicating that release from dormancy involves gene expression (25). Excised pear embryos synthesize nucleic acids due to stratification without GA3 application (12). Application of ABA to pear embryos decreases synthesis of specific RNA fractions (11) and changes the embryo's nucleotide composition (10) (Fig.…”

Section: Methodsmentioning

confidence: 99%

Protein Changes during the Stratification of Malus domestica Borkh. Seed

Eichholtz¹,

Robitaille²,

Herrmann³

1983

Plant Physiol.

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(4,7, 26). In apple, the optimum conditions for stratification, or after-ripening as it is often called (14), are exposure to 5°C (14) for approximately 60 d (17).The actual mechanism of low temperature release from dormancy is not known. One hypothesis is that ABA functions as a germination inhibitor and GA3 functions as a germination promoter, and the degree or depth of dormancy is a result of the ratio of the two (2, 24). GA3 levels increase during stratification (24). In hazel seeds, exogenous application of GA3 substitutes for stratification. Following such application, RNA synthesis increases as a result of increased RNA polymerase activity and DNA template availability (8, 9) indicating that release from dormancy involves gene expression (25). Excised pear embryos synthesize nucleic acids due to stratification without GA3 application (12). Application of ABA to pear embryos decreases synthesis of specific RNA fractions (11) and changes the embryo's nucleotide composition (10). While the in vitro translational capacity of polyribosomes ' Journal Paper No. 9192 of the Purdue University Agricultural Experiment Station. This paper is part of the M.S. thesis of D. A. E.

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Increase in nucleic acid synthesizing capacity during cold treatment of dormant pear embryos

Cited by 28 publications

References 12 publications

RNA Synthesis in Spring and Winter Wheat during Cold Acclimation

RNA Synthesis in Spring and Winter Wheat during Cold Acclimation

Evénements cellulaires associés à la germination de l'embryon de Pommier au cours d'un traitement par le froid humide

Protein Changes during the Stratification of Malus domestica Borkh. Seed

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