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Interaction among sediment anaerobiosis, nitrogen uptake and photosynthesis of Spartina alterniflora
Author(s) -
Pezeshki S. R.,
DeLaune R. D.,
Lindau C. W.
Publication year - 1988
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.1399-3054.1988.tb02019.x
Subject(s) - spartina alterniflora , rhizosphere , photosynthesis , nitrogen , sediment , limiting , anaerobic exercise , botany , agronomy , spartina , redox , chemistry , biology , ecology , marsh , paleontology , mechanical engineering , physiology , wetland , genetics , organic chemistry , bacteria , engineering
Spartina alterniflora Lois. plants were grown under controlled sediment‐pH‐redox conditions. Uptake of added 15 NH 4 ‐nitrogen and subsequent photosynthetic activity under different redox conditions in the plant root rhizosphere were measured. Data for total plant nitrogen and 15 N concentration indicated that nitrogen allocation was not altered by anaerobic conditions of the sediment. However, average net photosynthesis was reduced by up to 35% for plants under anaerobiosis. The results indicate that anaerobiosis in the root rhizosphere, rather than limiting nitrogen uptake, influences photosynthesis and growth of S. alterniflora under anaerobic conditions.