caa a22 4500 475751787 CHVBK 20180406123525.0 cr unu---uuuuu 170329e20001101xx s 000 0 eng 10.1023/A:1026594623578 doi (NATIONALLICENCE)springer-10.1023/A:1026594623578 Diurnal variation in photochemical dynamics and surface reflectance of the desiccation-tolerant moss, Tortula ruralis [Elektronische Daten] [E.P. Hamerlynck, Z. Tuba, Z. Csintalan, Z. Nagy, G. Henebry, D. Goodin] 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. Kluwer Academic Publishers, 2000 Albedo nationallicence Desiccation tolerance nationallicence Fluorescence non-photochemical quenching nationallicence Tortula ruralis nationallicence Hamerlynck E.P. Department of Biological Sciences, Rutgers University, 101 Warren St, 07102-1811, Newark, NJ, USA aut Tuba Z. Department of Botany and Plant Physiology, Agricultural University of Gödöllö, H2103, Hungary aut Csintalan Z. Department of Botany and Plant Physiology, Agricultural University of Gödöllö, H2103, Hungary aut Nagy Z. Department of Botany and Plant Physiology, Agricultural University of Gödöllö, H2103, Hungary aut Henebry G. Department of Biological Sciences, Rutgers University, 101 Warren St, 07102-1811, Newark, NJ, USA aut Goodin D. Department of Geography, Kansas State University, 201 Dickens Hall, Manhattan, KS, USA aut Plant Ecology Kluwer Academic Publishers 151/1(2000-11-01), 55-63 1385-0237 151:1<55 2000 151 11258 https://doi.org/10.1023/A:1026594623578 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1026594623578 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hamerlynck E.P. Department of Biological Sciences, Rutgers University, 101 Warren St, 07102-1811, Newark, NJ, USA aut NATIONALLICENCE 700 1- Tuba Z. Department of Botany and Plant Physiology, Agricultural University of Gödöllö, H2103, Hungary aut NATIONALLICENCE 700 1- Csintalan Z. Department of Botany and Plant Physiology, Agricultural University of Gödöllö, H2103, Hungary aut NATIONALLICENCE 700 1- Nagy Z. Department of Botany and Plant Physiology, Agricultural University of Gödöllö, H2103, Hungary aut NATIONALLICENCE 700 1- Henebry G. Department of Biological Sciences, Rutgers University, 101 Warren St, 07102-1811, Newark, NJ, USA aut NATIONALLICENCE 700 1- Goodin D. Department of Geography, Kansas State University, 201 Dickens Hall, Manhattan, KS, USA aut NATIONALLICENCE 773 0- Plant Ecology Kluwer Academic Publishers 151/1(2000-11-01), 55-63 1385-0237 151:1<55 2000 151 11258 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer