کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5764072 | 1625803 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Differences in the growth and physiological response of eight Myriophyllum species to carbon dioxide depletion
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The growth and photosynthesis of submerged aquatic plants is often limited by the CO2 availability in their habitats, but about 50% of all submerged plants are able to use HCO3â as an additional carbon source. This ability to use HCO3â provides a competitive advantage over non-CO2-users under CO2 limiting conditions. Here, we studied the growth and physiological response of eight Myriophyllum species (M. spicatum, M. triphyllum, M. heterophyllum, M. papillosum, M. variifolium, M. tetrandrum, M. tuberculatum, M. verticillatum) to CO2 and HCO3â use conditions. Physiologically, plants acclimated to HCO3â use showed higher net photosynthetic rates under both CO2 and HCO3â use conditions than plants grown under high CO2 conditions. Furthermore, we found significant differences in the HCO3â use capacity between the Myriophyllum species. The long-term exposure to high CO2 conditions during growth caused an accumulation of starch within the leaves, while the chlorophyll content decreased. Moreover, plants allocated more biomass into roots and reduced the leaf biomass under CO2 enrichment. The growth rates illustrate that M. spicatum is the most efficient HCO3â user out of the tested Myriophyllum species, followed by M. triphyllum and M. heterophyllum. The other five studied Myriophyllum species showed only a minor or no HCO3â use capacity. We conclude, that the HCO3â use capacity varies greatly even within a single genus, and that the HCO3â use capacity, among others, is an important trait of strong competitive submerged plants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquatic Botany - Volume 139, March 2017, Pages 25-31
Journal: Aquatic Botany - Volume 139, March 2017, Pages 25-31
نویسندگان
Emin Dülger, Andreas Hussner,