Intraspecific comparisons reveal differences in the pattern of ultravioletradiation responses in four maize (Zea mays L.) varieties

Citation
Hn. Cartwright et al., Intraspecific comparisons reveal differences in the pattern of ultravioletradiation responses in four maize (Zea mays L.) varieties, J PHOTOCH B, 62(1-2), 2001, pp. 88-96
Citations number
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Biochemistry & Biophysics
Journal title
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
ISSN journal
1011-1344 → ACNP
Volume
62
Issue
1-2
Year of publication
2001
Pages
88 - 96
Database
ISI
SICI code
1011-1344(20010901)62:1-2<88:ICRDIT>2.0.ZU;2-W
Abstract
Four maize (Zea mays L.) varieties were examined for ultraviolet radiation- induced changes in leaf rolling, biomass, fluctuating leaf asymmetry and DN A damage. Short-term dose-response curves for each response were constructe d and responses in each line compared. The four varieties each exhibited a different pattern of tolerance and reactivity, ranging from B73, which was tolerant in all four measures, to TSI, which was affected in DNA damage lev els and leaf rolling but unaffected in biomass accumulation and fluctuating leaf asymmetry. The pattern of ultraviolet radiation responses allows us t o narrow the possibilities for the source of the defect in reactive varieti es. The four varieties tested include inbred parents that have been used to construct recombinant inbred lines and a variety that is found in the back ground of the engineered RescueMu transposon mutagenesis lines. These dose- response curves and variety comparisons provide the foundation for genetic dissection of the mechanisms of ultraviolet radiation responses in maize. ( C) 2001 Published by Elsevier Science B.V.