EurekaMag.com logo
+ Site Statistics
References:
53,214,146
Abstracts:
29,074,682
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Alteration of transpiration rate, by changing air vapour pressure deficit, influences leaf extension rate transiently in Miscanthus






Journal of experimental botany 50(337): 1393-1401

Alteration of transpiration rate, by changing air vapour pressure deficit, influences leaf extension rate transiently in Miscanthus

A controlled environment chamber for whole plants is described in which vapour pressure deficit (VPD) and temperature can be controlled independently. Plant responses to changes in VPD at constant temperature were measured in terms of leaf extension and plant transpiration rates. Manipulation of VPD independently of temperature was shown to be capable of altering the leaf extension rates of the C(4) grass Miscanthus x giganteus grown in hydroponics. The effects of VPD on leaf extension are attributed to changes in transpiration rate and hence leaf water status. It was found that, at a temperature of 20 degrees C, the influence of a fixed change in VPD was proportionally less than those observed at temperatures which are close to the threshold for growth (between 6 and 10 degrees C). These responses are discussed in relation to our current understanding of the mechanisms of cell growth. The fact that the VPD effects on leaf expansion rates were largely transient suggest that simple models driven by temperature alone are adequate to predict leaf expansion within the temperature range 6-20 degrees C, for this genotype of Miscanthus, in the field.

(PDF same-day service: $19.90)

Accession: 003035738

DOI: 10.1093/jxb/50.337.1393



Related references

Alteration in transpiration rate at constant temperature influences leaf expansion rate transiently in Miscanthus. Journal of Experimental Botany 49(SUPPL ): 6-7, 1998

The influence of temperature and vapour pressure deficit on leaf extension in Miscanthus. Journal of Experimental Botany 47(SUPPL ): 44, 1996

Estimation of the transpiration rate in an apple orchard from net radiation and vapour pressure deficit measurements. Agricultural Meteorology 16(2): 277-289, 1976

Effects of vapour pressure deficit and radiation on the transpiration rate of a greenhouse sweet pepper crop. Acta Horticulturae: 7, 259-265, 2008

Restriction of transpiration rate under high vapour pressure deficit and non-limiting water conditions is important for terminal drought tolerance in cowpea. Plant Biology 15(2): 304-316, 2013

The effects of vapour pressure deficit (VPD) and enrichment with CO2 on photosynthesis, stomatal conductance, transpiration rate and water use efficiency (Wue) of sweet pepper (Capsicum annuum L.) grown by NFT. Acta Horticulturae ( 458): 351-356, 1998

Dependency of c-i/c-a and leaf transpiration efficiency on the vapour pressure deficit. Australian Journal of Plant Physiology 23(5): 561-568, 1996

High vapour pressure deficit influences growth, transpiration and quality of tomato fruits. Scientia Horticulturae 84(3/4): 285-296, 2000

The distribution pattern of transpiration rate, water saturation deficit, stomata number and size, photosynthetic and respiration rate in the area of the tobacco leaf blade. Biol Plant Acad Sci Bohemoslov 5(2): 143-153, 1963

Vapour pressure deficit during growth has little impact on genotypic differences of transpiration efficiency at leaf and whole-plant level: an example from Populus nigra L. Plant, Cell & Environment 38(4): 670-684, 2016