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Light induced transpiration in a chlorophyll deficient mutant of Hordeum vulgare
Author(s) -
SKAAR H.,
JOHNSSON A.
Publication year - 1980
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1980.tb02654.x
Subject(s) - transpiration , hordeum vulgare , photosynthesis , mutant , chlorophyll , blue light , botany , biology , chemistry , poaceae , biochemistry , optics , physics , gene
A chlorophyll deficient mutant of Hordeum vulgare L. was investigated with respect to its transpiration response to light pulses. Broad band blue light. 380–500 nm, caused a significant transpiration response, while broad band red light did not. The transpiration response to changes in the ambient CO 2 ‐concentration was the same in the chlorophyll deficient mutant as in green plants. The absence of a transpiration response to red light in the mutant was therefore not the result of a defective CO 2 ‐response. It is concluded that the specific blue light response is not mediated via photosynthetic CO 2 ‐fixation. The nature of the blue light response is discussed.