Abstract
Rhynchospora rubra was found to have a low CO2 compensation point, high δ13C value, Kranz leaf anatomy, starch present in the bundle sheath cells and narrow interveinal distance. These observations suggest that R. rubra is a C4 plant. A further anatomical survey revealed seven other Rhynchospora species presumably having the C4 photosynthetic pathway. In the family Cypraceae C4 plants therefore occur in the tribe Rhynchosporeae as well as in the Scirpeae and Cypereae. The C4 species of Rhynchospora have a normal Kranz type of leaf anatomy, although the C4 species of Cyperus and Fimbristylis presently known have an abnormal one in which the mestome sheath without chloroplasts is interposed between the Kranz tissue and the rest of the chlorenchyma. Thus in Rhynchospora the Kranz tissue is in direct contact with the rest of the chlorenchyma, and it is suggested that the Kranz tissue may be homologous with the mestome sheath.
| Original language | English |
|---|---|
| Pages (from-to) | 55-65 |
| Number of pages | 11 |
| Journal | The Botanical Magazine Tokyo |
| Volume | 93 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Mar 1 1980 |
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All Science Journal Classification (ASJC) codes
- Plant Science
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The occurrence of C4 species in the genus Rhynchospora and its significance in kranz anatomy of the cyperaceae. / Takeda, Tomoshiro; Osamu, Ueno; Agata, Waichi.
In: The Botanical Magazine Tokyo, Vol. 93, No. 1, 01.03.1980, p. 55-65.Research output: Contribution to journal › Article
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TY - JOUR
T1 - The occurrence of C4 species in the genus Rhynchospora and its significance in kranz anatomy of the cyperaceae
AU - Takeda, Tomoshiro
AU - Osamu, Ueno
AU - Agata, Waichi
PY - 1980/3/1
Y1 - 1980/3/1
N2 - Rhynchospora rubra was found to have a low CO2 compensation point, high δ13C value, Kranz leaf anatomy, starch present in the bundle sheath cells and narrow interveinal distance. These observations suggest that R. rubra is a C4 plant. A further anatomical survey revealed seven other Rhynchospora species presumably having the C4 photosynthetic pathway. In the family Cypraceae C4 plants therefore occur in the tribe Rhynchosporeae as well as in the Scirpeae and Cypereae. The C4 species of Rhynchospora have a normal Kranz type of leaf anatomy, although the C4 species of Cyperus and Fimbristylis presently known have an abnormal one in which the mestome sheath without chloroplasts is interposed between the Kranz tissue and the rest of the chlorenchyma. Thus in Rhynchospora the Kranz tissue is in direct contact with the rest of the chlorenchyma, and it is suggested that the Kranz tissue may be homologous with the mestome sheath.
AB - Rhynchospora rubra was found to have a low CO2 compensation point, high δ13C value, Kranz leaf anatomy, starch present in the bundle sheath cells and narrow interveinal distance. These observations suggest that R. rubra is a C4 plant. A further anatomical survey revealed seven other Rhynchospora species presumably having the C4 photosynthetic pathway. In the family Cypraceae C4 plants therefore occur in the tribe Rhynchosporeae as well as in the Scirpeae and Cypereae. The C4 species of Rhynchospora have a normal Kranz type of leaf anatomy, although the C4 species of Cyperus and Fimbristylis presently known have an abnormal one in which the mestome sheath without chloroplasts is interposed between the Kranz tissue and the rest of the chlorenchyma. Thus in Rhynchospora the Kranz tissue is in direct contact with the rest of the chlorenchyma, and it is suggested that the Kranz tissue may be homologous with the mestome sheath.
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U2 - 10.1007/BF02489486
DO - 10.1007/BF02489486
M3 - Article
VL - 93
SP - 55
EP - 65
JO - Journal of Plant Research
JF - Journal of Plant Research
SN - 0918-9440
IS - 1
ER -