Proof of C4photosynthesis without Kranz anatomy inBienertia cycloptera(Chenopodiaceae)
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چکیده
منابع مشابه
Proof of C4 photosynthesis without Kranz anatomy in Bienertia cycloptera (Chenopodiaceae).
Kranz anatomy, with its separation of elements of the C4 pathway between two cells, has been an accepted criterion for function of C4 photosynthesis in terrestrial plants. However, Bienertia cycloptera (Chenopodiaceae), which grows in salty depressions of Central Asian semi-deserts, has unusual chlorenchyma, lacks Kranz anatomy, but has photosynthetic features of C4 plants. Its photosynthetic r...
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C4 photosynthesis without Kranz anatomy (single-cell C4 photosynthesis) occurs in only 0.003% of known species of C4 flowering plants. To add insight into the evolution of C4 photosynthesis, we studied the tribe Orcuttieae (Poaceae: Chloridoideae), which has species that can grow under both aquatic and terrestrial conditions, and utilize single-cell C4 photosynthesis when growing submerged. Car...
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C4 photosynthesis is a complex physiological adaptation that confers greater productivity than the ancestral C3 photosynthetic type in environments where photorespiration is high. It evolved in multiple lineages through the coordination of anatomical and biochemical components, which concentrate CO2 at the active site of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco). In most C4 plan...
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Cyperaceae is an angiosperm family with the greatest diversity of species with Kranz anatomy. Four different types of Kranz anatomy (chlorocyperoid, eleocharoid, fimbristyloid and rhynchosporoid) have been described for this angiosperm family, and the occurrence and structural characteristics of these types are important to trace evolutionary hypotheses. The purpose of this study was to examine...
متن کاملC(4) photosynthesis in terrestrial plants does not require Kranz anatomy.
C(4) photosynthesis in terrestrial plants was thought to require Kranz anatomy because the cell wall between mesophyll and bundle sheath cells restricts leakage of CO(2). Recent work with the central Asian chenopods Borszczowia aralocaspica and Bienertia cycloptera show that C(4) photosynthesis functions efficiently in individual cells containing both the C(4) and C(3) cycles. These discoveries...
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ژورنال
عنوان ژورنال: The Plant Journal
سال: 2002
ISSN: 0960-7412
DOI: 10.1046/j.1365-313x.2002.01385.x