Skip to main content
U.S. flag

An official website of the United States government

Photosynthesis and water relations of the mistletoe, Phoradendron villosum, and its host, the California valley oak, Quercus lobata

Author(s):

Year:

1983

Publication type:

Scientific Journal (JRNL)

Primary Station(s):

Northern Research Station

Source:

Oecologia. 60: 396-400.

Description

Water vapor and CO2 exchange characteristics were studied in Phoradendron villosum, a hemiparasitic mistletoe and its host, Quercus lobata. The hemiparasite had stomatal conductances equal to or higher than the host but a much lower capacity to fix carbon. Respiration was high in the mistletoe relative to maximum photosynthesis because of the high leaf specific weight (weight per unit area) in this species. The temperature optima for photosynthesis were similar in both species although photosynthesis in Phoradendron declined more steeply below 20 degrees C. Consequences of the high conductance and low rate of photosynthesis in the mistletoe include a low water-use efficiency and a relatively high internal concentration of CO2.

Citation

Hollinger, David Y. 1983. Photosynthesis and water relations of the mistletoe, Phoradendron villosum, and its host, the California valley oak, Quercus lobata. Oecologia. 60: 396-400.

Cited

Publication Notes

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
https://www.fs.usda.gov/treesearch/pubs/13979