Diurnal variation in photochemical dynamics and surface reflectance of the desiccation-tolerant moss, Tortula ruralis

E. P. Hamerlynck, Z. Tuba, Z. Csintalan, Z. Nagy, G. Henebry, D. Goodin

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Most desiccation-tolerant plants alter shoot structure during drying, making it possible to use changes in surface reflectance as a proxy measure of plant water status. Diurnal courses of surface reflectance (albedo) and chlorophyll fluorescence parameters of the ectohydric moss, Tortula ruralis (Hedw.) Gaertn, were measured to assess the coordination between anatomical and physiological features under field conditions. Albedo showed a sigmoidal relationship with relative humidity and the deviation of moss mat temperature from dew point. Maximum photosynthetic quantum yield (F v/F m) also displayed a sigmoidal relationship pooled across three days differing in light, temperature, and relative humidity. Depending on the light conditions and rapidity of drying during the morning, there were distinct differences in the ability of T. ruralis to establish thermal dissipation of excess light energy (NPQ) across a range of light levels following rehydration through the day. These findings suggest that there is a coordinated suite of architectural and physiological characteristics maintaining the photosynthetic integrity of these plants in highly variable arid and semi-arid environments.

Original languageEnglish
Pages (from-to)55-63
Number of pages9
JournalPlant Ecology
Volume151
Issue number1
DOIs
Publication statusPublished - 2000

Fingerprint

surface reflectance
diurnal variation
desiccation
moss
reflectance
mosses and liverworts
albedo (reflectance)
albedo
relative humidity
dewpoint
drying
rehydration
dew point
dry environmental conditions
arid environment
dissipation
temperature
chlorophyll
fluorescence
shoot

Keywords

  • Albedo
  • Desiccation tolerance
  • Fluorescence non-photochemical quenching
  • Tortula ruralis

ASJC Scopus subject areas

  • Forestry
  • Plant Science
  • Ecology

Cite this

Diurnal variation in photochemical dynamics and surface reflectance of the desiccation-tolerant moss, Tortula ruralis. / Hamerlynck, E. P.; Tuba, Z.; Csintalan, Z.; Nagy, Z.; Henebry, G.; Goodin, D.

In: Plant Ecology, Vol. 151, No. 1, 2000, p. 55-63.

Research output: Contribution to journalArticle

@article{2db1231c583642f88f128de321d73a11,
title = "Diurnal variation in photochemical dynamics and surface reflectance of the desiccation-tolerant moss, Tortula ruralis",
abstract = "Most desiccation-tolerant plants alter shoot structure during drying, making it possible to use changes in surface reflectance as a proxy measure of plant water status. Diurnal courses of surface reflectance (albedo) and chlorophyll fluorescence parameters of the ectohydric moss, Tortula ruralis (Hedw.) Gaertn, were measured to assess the coordination between anatomical and physiological features under field conditions. Albedo showed a sigmoidal relationship with relative humidity and the deviation of moss mat temperature from dew point. Maximum photosynthetic quantum yield (F v/F m) also displayed a sigmoidal relationship pooled across three days differing in light, temperature, and relative humidity. Depending on the light conditions and rapidity of drying during the morning, there were distinct differences in the ability of T. ruralis to establish thermal dissipation of excess light energy (NPQ) across a range of light levels following rehydration through the day. These findings suggest that there is a coordinated suite of architectural and physiological characteristics maintaining the photosynthetic integrity of these plants in highly variable arid and semi-arid environments.",
keywords = "Albedo, Desiccation tolerance, Fluorescence non-photochemical quenching, Tortula ruralis",
author = "Hamerlynck, {E. P.} and Z. Tuba and Z. Csintalan and Z. Nagy and G. Henebry and D. Goodin",
year = "2000",
doi = "10.1023/A:1026594623578",
language = "English",
volume = "151",
pages = "55--63",
journal = "Plant Ecology",
issn = "1385-0237",
publisher = "Springer Netherlands",
number = "1",

}

TY - JOUR

T1 - Diurnal variation in photochemical dynamics and surface reflectance of the desiccation-tolerant moss, Tortula ruralis

AU - Hamerlynck, E. P.

AU - Tuba, Z.

AU - Csintalan, Z.

AU - Nagy, Z.

AU - Henebry, G.

AU - Goodin, D.

PY - 2000

Y1 - 2000

N2 - Most desiccation-tolerant plants alter shoot structure during drying, making it possible to use changes in surface reflectance as a proxy measure of plant water status. Diurnal courses of surface reflectance (albedo) and chlorophyll fluorescence parameters of the ectohydric moss, Tortula ruralis (Hedw.) Gaertn, were measured to assess the coordination between anatomical and physiological features under field conditions. Albedo showed a sigmoidal relationship with relative humidity and the deviation of moss mat temperature from dew point. Maximum photosynthetic quantum yield (F v/F m) also displayed a sigmoidal relationship pooled across three days differing in light, temperature, and relative humidity. Depending on the light conditions and rapidity of drying during the morning, there were distinct differences in the ability of T. ruralis to establish thermal dissipation of excess light energy (NPQ) across a range of light levels following rehydration through the day. These findings suggest that there is a coordinated suite of architectural and physiological characteristics maintaining the photosynthetic integrity of these plants in highly variable arid and semi-arid environments.

AB - Most desiccation-tolerant plants alter shoot structure during drying, making it possible to use changes in surface reflectance as a proxy measure of plant water status. Diurnal courses of surface reflectance (albedo) and chlorophyll fluorescence parameters of the ectohydric moss, Tortula ruralis (Hedw.) Gaertn, were measured to assess the coordination between anatomical and physiological features under field conditions. Albedo showed a sigmoidal relationship with relative humidity and the deviation of moss mat temperature from dew point. Maximum photosynthetic quantum yield (F v/F m) also displayed a sigmoidal relationship pooled across three days differing in light, temperature, and relative humidity. Depending on the light conditions and rapidity of drying during the morning, there were distinct differences in the ability of T. ruralis to establish thermal dissipation of excess light energy (NPQ) across a range of light levels following rehydration through the day. These findings suggest that there is a coordinated suite of architectural and physiological characteristics maintaining the photosynthetic integrity of these plants in highly variable arid and semi-arid environments.

KW - Albedo

KW - Desiccation tolerance

KW - Fluorescence non-photochemical quenching

KW - Tortula ruralis

UR - http://www.scopus.com/inward/record.url?scp=0034489913&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034489913&partnerID=8YFLogxK

U2 - 10.1023/A:1026594623578

DO - 10.1023/A:1026594623578

M3 - Article

AN - SCOPUS:0034489913

VL - 151

SP - 55

EP - 63

JO - Plant Ecology

JF - Plant Ecology

SN - 1385-0237

IS - 1

ER -