Variation in violaxanthin and lutein cycle components in two provenances of Acer grandidentatum L. exposed to contrasting light

• Autorzy: Bowen- O-Connor C A , VanLeeuven D. M. , Bettmann G. , Sterling T. M. , Hilaire R. S.
• Języki publikacji: EN

Abstrakty

EN

The ability of ornamental plants to acclimate to contrasting light environments via photoprotection mechanisms such as the violaxanthin (V) and lutein (Lx) cycles determines their success in managed landscapes. This study investigated whether provenance of origin influenced V and Lx cycle components in Acer grandidentatum L. (bigtooth maple) exposed to contrasting light environments. Seven-year-old bigtooth maple plants from two provenances, Lost Maples State Natural Area, Texas (LMPTX) and Guadalupe Mountains, Texas (GMTX) were subjected to unshaded conditions and 48 % shade. Regardless of light treatment, b-carotene content of plants from the LMPTX provenance (1,181 lg g-1) was higher than those from GMTX (964 lg g-1). Lutein content declined from day 5 to 10, but returned to day 5 levels at the end of the experiment at day 15. In contrast, more a-carotene accumulated at day 10 than at day 5. Although the conversion state of the xanthophyll pigment pool was unchanged, zeaxanthin was higher in unshaded than shaded bigtooth maple plants. Chlorophyll a and b decreased from day 5 to 10 and then increased on day 15. Light treatment did not cause photosystem II efficiency and relative water content to differ between the provenances, suggesting that they effectively acclimated to contrasting light conditions.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2013
• Tom: 35
• Numer: 02
• Opis fizyczny: p.541-548,fig.,ref.

Twórcy

autor

Bowen- O-Connor C A

• Plant and Environmental Sciences, New Mexico State University, Box 30003, Las Cruces, NM 88003, USA

autor

VanLeeuven D. M.

• Agricultural Biometric Service, New Mexico State University, Las Cruces, NM 88003, USA

autor

Bettmann G.

• Entomology, Plant Pathology, and Weed Science, New Mexico State University, Box 30003, Las Cruces, NM 88003, USA

autor

Sterling T. M.

• Land Resources and Environmental Sciences, Montana State University, Bozeman, MT 59717, USA

autor

Hilaire R. S.

• Plant and Environmental Sciences, New Mexico State University, Box 30003, Las Cruces, NM 88003, USA

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