@Article{phyton.2021.012968,
AUTHOR = {Xiubing Gao, Jiejie Lv, Can Guo, Anlong Hu, Xiaomao Wu, Zengping Li},
TITLE = {Species Diversity of Arbuscular Mycorrhizal Fungi in the Rhizosphere of <i>Hevea brasiliensis</i> in Hainan Island, China},
JOURNAL = {Phyton-International Journal of Experimental Botany},
VOLUME = {90},
YEAR = {2021},
NUMBER = {1},
PAGES = {179--192},
URL = {http://www.techscience.com/phyton/v90n1/40613},
ISSN = {1851-5657},
ABSTRACT = {<i>Hevea brasiliensis</i> is one of the important economic trees with a great
economic value for natural rubber production. Symbiosis between roots of <i>H. brasiliensis</i> and arbuscular mycorrhizal fungi (AMF) is widely recognized, and can
provide a range of benefits for both of them. Hainan Island harbors is one of the
largest plantations of <i>H. brasiliensis</i> in China, whereas the information regarding
the diversity of AMF in the rhizosphere of <i>H. brasiliensis</i> on this island is scarce.
The diversity of AMF species in the rhizosphere of rubber tree plantations in Hainan
was investigated in this study. A total of 72 soil samples from the rhizosphere of <i>H.
brasiliensis</i> RY7-33-97 were collected. These included 48 samples from plantations
in 11 cities or counties that had been planted for 15–25 years, and 24 samples from a
demonstrating plantation site of the China National Rubber Tree Germplasm Repository representing plantations with tree plantation ages from one to 40 year-old.
Collectively, a total of 68 morphotypes of AMF, belonging to the genera of <i>Archaeospora</i> (1), <i>Glomus</i> (43), <i>Acaulospora</i> (18), <i>Entrophospora</i> (3), <i>Scutellospora</i> (2),
and <i>Gigaspora</i> (1) were isolated and identified, as per morphological characteristics
of spores presented in the collected soil samples. <i>Glomus</i> (Frequency, F = 100%) and
<i>Acaulospora</i> (F = 100%) were the predominant genera, and <i>A. mellea</i> (F = 63.9%)
and <i>A. scrobiculata</i> (F = 63.9%) were the predominant species. AMF species differed
significantly among collected sites in spore density (SD, 290.7–2,186.7 spores per
100 g dry soil), species richness (SR, 4.3–12.3), and Shannon-Weiner index of diversity (H, 1.24–2.24). SD was negatively correlated with available phosphorus level in
the soil; SR was positively correlated with soil total phosphorus content; and H was
positively correlated with levels of soil organic matter and total phosphorus. Similarly, SD, SR, and H were also correlated with <i>H. brasiliensis</i> plantation age, and
an increasing trend was observed up to 40 years. These results suggest that the
AMF community was complex and ubiquitous in the island plantation ecosystems
of <i>H. brasiliensis</i>, with high species abundance and diversity. Soil factors and plantation age dramatically affected AMF diversity at species level.},
DOI = {10.32604/phyton.2021.012968}
}