@Article{phyton.2014.83.353,
AUTHOR = {Nurul Hafiza MR, KT Yong, N Osman, A Nasrulhaq-Boyce},
TITLE = {Leaf photosynthetic characteristics in eight shaded Malaysian filmy ferns},
JOURNAL = {Phyton-International Journal of Experimental Botany},
VOLUME = {83},
YEAR = {2014},
NUMBER = {all},
PAGES = {353--361},
URL = {http://www.techscience.com/phyton/v83nall/37116},
ISSN = {1851-5657},
ABSTRACT = {The photosynthetic characteristics of eight Malaysian <i>Hymenophyllaceae</i> filmy ferns from shady habitats were investigated in this study. Chlorophyll content was highest in <i>Trichomanes meifolium</i>, followed by <i>Cephalomanes obscurum, Hymenophyllum serrulatum, H. denticulatum, H. javanicum, H. acanthoides, H. exsertum</i> and H. blandum, with values ranging from 3.3 to 8.6 mg/g fresh weight. Soluble protein content was remarkably high in <i>H. serrulatum</i>, with values of 53 ± 3.50 mg/g, followed by <i>H. denticulatum, <i>H. acanthoides</i>, T. meifolium</i> and the other species. Protein to chlorophyll ratios in the filmy ferns were low as expected, except for in <i>H. serrulatum</i>, <i>H. acanthoides</i> and H. denticulatum. Chloroplast number and size ranged between 34 to 138 per cell profile, and between 4.8 to 6.5 µm in diameter, in the <i>Hymenophyllaceae</i>. Quantum efficiency measurements in four <i>Hymenophyllaceae</i> spp. exhibited Fv/Fm values ranging between 0.73 to 0.81. The       <i>Hymenophyllaceae</i> spp. also showed low <i>in vivo</i> CO<sub>2</sub> assimilatory rates and light saturation points, ranging between 5 to 15 µmol CO<sub>2</sub>/m<sup>2</sup>/s and below 150 µmol/m<sup>2</sup>/s, respectively. The findings add further to our understanding on how the filmy ferns adapt and thrive in their humid and shady habitats.},
DOI = {10.32604/phyton.2014.83.353}
}