TITLE

Variation of the Linkage of Root Function with Root Branch Order

AUTHOR(S)
Long, Yingqian; Kong, Deliang; Chen, Zhengxia; Zeng, Hui
PUB. DATE
February 2013
SOURCE
PLoS ONE;Feb2013, Vol. 8 Issue 2, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Mounting evidence has shown strong linkage of root function with root branch order. However, it is not known whether this linkage is consistent in different species. Here, root anatomic traits of the first five branch order were examined in five species differing in plant phylogeny and growth form in tropical and subtropical forests of south China. In Paramichelia baillonii, one tree species in Magnoliaceae, the intact cortex as well as mycorrhizal colonization existed even in the fifth-order root suggesting the preservation of absorption function in the higher-order roots. In contrast, dramatic decreases of cortex thickness and mycorrhizal colonization were observed from lower- to higher-order roots in three other tree species, Cunninghamia lanceolata, Acacia auriculiformis and Gordonia axillaries, which indicate the loss of absorption function. In a fern, Dicranopteris dichotoma, there were several cortex layers with prominently thickened cell wall and no mycorrhizal colonization in the third- and fourth-order roots, also demonstrating the loss of absorptive function in higher-order roots. Cluster analysis using these anatomic traits showed a different classification of root branch order in P. baillonii from other four species. As for the conduit diameter-density relationship in higher-order roots, the mechanism underpinning this relationship in P. baillonii was different from that in other species. In lower-order roots, different patterns of coefficient of variance for conduit diameter and density provided further evidence for the two types of linkage of root function with root branch order. These linkages corresponding to two types of ephemeral root modules have important implication in the prediction of terrestrial carbon cycling, although we caution that this study was pseudo-replicated. Future studies by sampling more species can test the generality of these two types of linkage.
ACCESSION #
87625244

 

Related Articles

  • Deer-mediated expansion of a rare plant species. Boulanger, Vincent; Baltzinger, Christophe; Saïd, Sonia; Ballon, Philippe; Ningre, François; Picard, Jean-François; Dupouey, Jean-Luc // Plant Ecology;Feb2011, Vol. 212 Issue 2, p307 

    Numerous plant colonizations have been putatively attributed to deer, based on plant species traits, fur brushing or dung analyses. But, in woodlands, direct links between the expansion of zoochorous plant species and ungulate presence have seldom been reported. Based on coupled floristic and...

  • Genetic population structure of the ectomycorrhizal fungus Pisolithus microcarpus suggests high gene flow in south-eastern Australia. Hitchcock, Catherine J.; Chambers, Susan M.; Cairney, John W. G. // Mycorrhiza;Feb2011, Vol. 21 Issue 2, p131 

    Pisolithus are ectomycorrhizal fungi that associate with roots of numerous plant species in natural and plantation forests worldwide. Despite the fact that Pisolithus spp. are present in plantation forests in many countries, knowledge of the genetic population structure of Pisolithus spp....

  • Biological spectrum of Ramgadhi (Megharj) range forest, District Sabarkantha, North Gujarat, India. Vediya, Sanjay; Kharadi, Hasmukh // International Journal of Pharmacy & Life Sciences;Jul2012, Vol. 3 Issue 7, p1868 

    This paper deals with the study of Biological spectrum of Ramgadhi (Megharj) range forest, district Sabarkantha North Gujarat. The present study enumerated 317 plant species, which belong to 189 genera and 64 families of angiosperms. Five life forms of different percentage were observed. The...

  • Florística e caracterização da vegetação da Toca dos Urubus, Baependi, Minas Gerais, Brasil. Moreira Ferreira, Fabrício; Campostrini Forzza, Rafaela // Biota Neotropica;2009, Vol. 9 Issue 4, p131 

    (Floristics and characterization of the vegetation at Toca dos Urubus, Minas Gerais State, Brazil) Toca dos Urubus is located in Baependi municipality, Minas Gerais State, and belong the Alto Rio Grande region. The vegetation comprised a mosaic with cerrado, rocky grassland and seasonally dry...

  • Ecological perspectives for the restoration of plant communities in European temperate forests . Honnay, O.; Bossuyt, B.; Verheyen, K.; Butaye, J.; Jacquemyn, H.; Hermy, M. // Biodiversity & Conservation;Feb2002, Vol. 11 Issue 2, p213 

    Presents various ecological perspectives for the restoration of plant communities in European temperate forests. Afforestation efforts in western Europe; Focus on the colonization ability of forest plant species and particularly on so-called ancient forest plant species; Duration and intensity...

  • An Environmental Analysis of Forest Patterns. Brush, Grace S. // American Scientist;Jan/Feb82, Vol. 70 Issue 1, p18 

    Examines the relationship between present distributions of plant species and their habitats in forests in Maryland. Physiological and adaptive mechanisms responsible for the formation of forest communities; Variations in the frequency with which various species occur together; Relationships...

  • Efeito da sazonalidade na comunidade de fungos micorrízicos arbusculares em um fragmento de mata de cipó em Vitória da Conquista, Bahia. Soares dos Santos, Renata; Anjos Bittencourt Barreto, Patricia; Nogueira Scoriza, Rafael // Revista Brasileira de Biociencias;jan-mar2014, Vol. 12 Issue 1, p46 

    Arbuscular mycorrhizal fungi are obligate symbionts of plants that occur in the most forest ecosystems, being influenced by various environmental variables. Therefore, the objective of this study was to evaluate the effect of annual seasonality on the community of arbuscular mycorrhizal fungi in...

  • The effect of cupric carbonate on root morphology of containerized mycorrhizal pine seedlings Ruehle, John L. // Canadian Journal of Forest Research;Jun1985, Vol. 15 Issue 3, p586 

    No abstract available.

  • Geophila erythrocarpa (Rubiaceae), a new species from d.r.congo and Zambia.  // Blumea;2011, Vol. 56 Issue 2, p149 

    The article describes the plant species Geophila erythrocarpa from D.R. Congo and Zambia. This species is limited to dry, dense forests. It is similar to G. obvallata from which it differs in having red instead of blue or black fruits. G. erythrocarpa also shares the red-colored fruits with G....

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics