Hubei Academy of Forestry

Wuhan, China

Hubei Academy of Forestry

Wuhan, China

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Li D.-W.,U.S. Department of Soil and Water | Chen J.,Hubei Academy of Forestry | Wang Y.,Hubei Academy of Forestry
Mycotaxon | Year: 2011

A new species, Rhexodenticula zhengii from leaf litter of Sycopsis sinensis collected from Houhe National Nature Reserve, Wufeng, Hubei, China is described and illustrated with cymbiform conidia 18.5-22.0 × 4.5-5.0 μ m, constricted at proximal and distal septa. A key to the species of Rhexodenticula is provided. © 2011 Publishing Technology.


Cheng R.,Chinese Academy of Forestry | Feng X.,Chinese Academy of Forestry | Xiao W.,Chinese Academy of Forestry | Wang R.,Chinese Academy of Forestry | And 3 more authors.
Shengtai Xuebao/ Acta Ecologica Sinica | Year: 2011

Masson pine is one of the main native plantation species in South China due to its fast and easy growing characteristics. Plantation area of the species increased dramatically and its growth was significantly impacted by climate change in past decades. The relationship between net productivity of masson pine plantation and climatic factors, especially for the plantation in its northern natural distribution boundary where masson pine growth is more sensitive to changes of climatic factors, is important to understand the response of its growth to climate change. We set six 20m×20m plots in 30 years old masson pine plantation in Jigongshan National Nature Reserve of Henan Province for doing this study. Both height and diameter at breast height (DBH) of all trees were measured and six cross increment cores at breast height of three sample trees were got in each plot. Tree ring widths of the dried and burnished cores were measured with Lintab tree ring analysis system. Annul diameters and heights of the sample trees were calculated using the annul tree ring widths. Biomass and net productivity of the old masson pine stands in the past 30 years were calculated based on the regressive equations between biomass and height and DBH in this area. After that, correlations between productivity and climate factors, including monthly and seasonal temperature, humidity, precipitation, sunshine and the Palmer Drought Severity Index (PDSI), were analyzed. The regressive equation between net productivity and climatic factors of the plantation in the area was established finally. The results indicated that biomass of the plantation increased more than three times in the past 30 years, from 59.00 t/hm2 in 1980 to 254.75 t/hm2 in 2009, and mean net productivity of the stand was 6.64t·hm-2·a-1. Net productivity was closely correlated with climatic factors. The effects of temperature, sunlight, precipitation and humidity on net productivity were different. There were positive correlations between productivity and precipitation in last August, mean temperature in February, precipitation in March, mean humidity in May, and mean temperature and total sunlight in October. There were negative correlations between productivity and total sunlight in May, precipitation and mean humidity in October. Productivity was correlative positively with PDSI from February to September. Seventy one percent of the changes of productivity could be interpreted by climatic factors. Generally, biomass of masson pine plantation in North Subtropical Region could accumulate as high as that in low-latitude region but net productivity in the region was much less than that in low-latitude region. Annual changes of net productivity were mainly caused by climatic factors, especially the length of growing season and soil water availability in growing season. It is implied that both biomass and mean net productivity of the plantations could increase in the future due to possible increase of temperature and precipitation in the North Subtropical Region.


Mi F.,Huazhong Agricultural University | Sun X.,Huazhong Agricultural University | Chen J.,Hubei Academy of Forestry | Wang M.-Q.,Huazhong Agricultural University
Entomologia Generalis | Year: 2014

The morphology of newly hatched larvae of the important parasitoid beetle Dastarcus helophoroides (Coleoptera: Bothrideridae) was examined by scanning electron microscopy. This study examined the morphological structures of the cephalic, the thoracic. and abdominal regions of newly hatched larvae, and the distribution of sensilla on these structures. Sensilla chaetica and sensilla styloconica were identified on the maxillae, labium and antenna, sensilla chaetica were identified on the labrum and mandible, sensilla basiconica, Bohm's bristles and sensilla chaetica were found in the thoracic region. and sensilla basiconica were found encircling the body on all abdominal segments. In addition, our comparative morphological observations found no evidence of sexual dimorphism in newly hatched larvae in terms of shape, structure, sensilla distribution or typology. © 2014 E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, Germany.


Li D.-W.,U.S. Department of Soil and Water | Kendrick B.,8727 Lochside Drive | Chen J.,Hubei Academy of Forestry
Mycological Progress | Year: 2012

Two new species, Codinaea sinensis and Parapleurotheciopsis quercicola from leaf litter of Quercus phillyraeoides collected from Wudangshan, Hubei, China are described and illustrated. Conidiogenous cells of Codinaea sinensis are phialides, the conidia 1-celled, falcate, smooth, colorless, 9.7-11 × 2.0-2.4 μm, with a single, unbranched setula at each end. Conidia of Parapleurotheciopsis quercicola are 3-5-septate, cylindro-ellipsoidal, colorless, smooth, thin-walled, 19-24 × 4.4-5.4 μm. A key to the species of Parapleurotheciopsis is provided. Two new records for China, Subramaniomyces fusisaprophyticus and Taifanglania inflata are also reported. © 2012 German Mycological Society and Springer.


Li D.-W.,U.S. Department of Soil and Water | Chen J.,Hubei Academy of Forestry | Wang Y.,Hubei Academy of Forestry
Sydowia | Year: 2010

A field trip was made to Houhe National Nature Reserve in Wufeng County,Hubei, China in August 2008. Among the fungal specimens collected were two undescribed species of dematiaceous hyphomycetes, Scolecobasidium houhense sp. nov. with conidia fusiform, minutely verruculose, brown, 3-septate, 26-31 x 4. 5-5.5 um and Spadicoides wufengensis sp. nov. with two kinds of conidia: 1-celled conidia, ventricose or ovoid, brown, smooth, 5.5-9 × 3-4.5 um, and 3-celled conidia of synanamorph, obovoid, smooth, brown, truncate at base, 8.5-12 x 3.5-5 um. The new fungal taxa are described and illustrated.


Zha Y.-P.,Huazhong Agricultural University | Lei C.-L.,Hubei Academy of Forestry
Journal of Agricultural and Urban Entomology | Year: 2012

Noctuid moths with tympanal organs perform a series of evasive maneuvers when exposed to bat-like ultrasounds. In this paper, we tested the hypothesis that certain ultrasound frequencies are environmental stress factors that have physiological effects on noctuid moths. The effects of ultrasound produced from a commercial device on the antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), and peroxidase (POX), were investigated in the adults, pupae, and larvae of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae). Our results showed that the effects of ultrasound-stress on antioxidant enzymes depended on the developmental stages of H. armigera and the duration of exposure. A significant (P < 0.01) increase in POX activity in adult and larval H. armigera was observed 40 minutes after ultrasound exposure. The results indicated that ultrasound stress has the potential to alter the antioxidant enzyme system in H. armigera. © The South Carolina Entomological Society, Inc.


Wang Y.,Huazhong Agricultural University | Wang Y.,Hubei Academy of Forestry | Chen J.,Hubei Academy of Forestry | Li D.-W.,U.S. Department of Soil and Water | And 2 more authors.
European Journal of Plant Pathology | Year: 2016

Colletotrichum gloeosporioides is the causal agent of Camellia oleifera anthracnose, mainly infecting fruits and leaves. The fungus secretes degrading enzymes to destroy the cuticle of aerial plant parts and help infect the host successfully. To validate whether a cutinase gene (CglCUT1) was required for cutinase activity and pathogenicity of C. gloeosporioides, the CglCUT1 gene was cloned and analyzed. The characterization of CglCUT1 predicted protein suggests that the cloned DNA encoded a cutinase in C. gloeosporioides affecting C. oleifera. The CglCUT1 showed a high homology to those from C. gloeosporioides causing papaya anthracnose and C. capsici causing pepper anthracnose, as well as those of other ascomycetes. The whole CglCUT1 gene was knocked-out and the knockout mutant (∆CglCUT39) was subsequently complemented using Agrobacterium tumefaciens mediated transformation. The knockout transformants exhibited significant decreases in cutinase activity and virulence compared with the wild-type strain. The complemented transformants of the disrupted transformant ∆CglCUT39 showed a significant increase in cutinase activity and virulence compared with the disrupted transformant ∆CglCUT39. This study suggests that the CglCUT1 gene has a positive effect on fungal virulence of the hemibiotrophic C. gloeosporioides on C. oleifera. © 2016 Koninklijke Nederlandse Planteziektenkundige Vereniging


Li D.-W.,U.S. Department of Soil and Water | Chen J.,Hubei Academy of Forestry | Wang Y.,Hubei Academy of Forestry
Mycotaxon | Year: 2013

Among hyphomycetes collected from dead leaves of Sycopsis sinensis in Houhe National Nature Reserve, Wufeng, Hubei, China, a sporodochial fungus new to science, Linodochium sinense, is described and illustrated. It develops yellow conidiomata and 2-celled conidia that are filiform, colorless, smooth, 34-40 × 1.1-1.5 μm. Candelabrum microsporum, Chalara affinis, Cylindrocladium madagascariense, and Subulispora britannica are new records from China, while Menisporopsis novae-zelandiae is newly reported from mainland China.© 2013. Mycotaxon, Ltd.


Zhou C.-X.,Huazhong Agricultural University | Sun X.,Huazhong Agricultural University | Mi F.,Huazhong Agricultural University | Chen J.,Hubei Academy of Forestry | Wang M.-Q.,Huazhong Agricultural University
Journal of Insect Science | Year: 2015

Parasitoid wasps of the genus Sclerodermus (Hymenoptera: Bethylidae) are an important natural enemy of the Japanese pine sawyer beetle Monochamus alternatus Hope (Coleoptera: Cerambycidae). In this study, we used scanning electron microscopy to examine the external morphology of the antennal sensilla of Sclerodermus sp. Antennae of females and males comprised the scape, pedicel, and 11 flagellomere segments. Based on the morphology of the sensilla in each sex, seven types of sensillum were identified: sensilla trichodea (Tr.1, Tr.2 and Tr.3), sensilla basiconica (Ba.1, Ba.2, and Ba.3), sensilla styloconica (St.1 and St.2), sensilla placodea, sensilla coeloconica, sensilla squamiforma, and Bohm's bristles. Tr.2, Ba.1, and St.1 were only found in females, whereas Ba.2, Ba.3, and St.2 were only observed in males. Sensilla placodea were the most common, given that they occur on the antennae of many parasitoid Hymenoptera, whereas sensilla Tr were the most abundant, being distributed over the entire antennal surface. These sensilla are likely to have roles in the host locating and habitat searching behavior of adult Sclerodermus wasps. Therefore, our findings provide a basis for further studies of the host location behavior of this and other species of parasitic wasp. © The Author 2015. Published by Oxford University Press on behalf of the Entomological Society of America.


PubMed | Huazhong Agricultural University and Hubei Academy of Forestry
Type: | Journal: Journal of insect science (Online) | Year: 2015

Parasitoid wasps of the genus Sclerodermus (Hymenoptera: Bethylidae) are an important natural enemy of the Japanese pine sawyer beetle Monochamus alternatus Hope (Coleoptera: Cerambycidae). In this study, we used scanning electron microscopy to examine the external morphology of the antennal sensilla of Sclerodermus sp. Antennae of females and males comprised the scape, pedicel, and 11 flagellomere segments. Based on the morphology of the sensilla in each sex, seven types of sensillum were identified: sensilla trichodea (Tr.1, Tr.2 and Tr.3), sensilla basiconica (Ba.1, Ba.2, and Ba.3), sensilla styloconica (St.1 and St.2), sensilla placodea, sensilla coeloconica, sensilla squamiforma, and Bohms bristles. Tr.2, Ba.1, and St.1 were only found in females, whereas Ba.2, Ba.3, and St.2 were only observed in males. Sensilla placodea were the most common, given that they occur on the antennae of many parasitoid Hymenoptera, whereas sensilla Tr were the most abundant, being distributed over the entire antennal surface. These sensilla are likely to have roles in the host locating and habitat searching behavior of adult Sclerodermus wasps. Therefore, our findings provide a basis for further studies of the host location behavior of this and other species of parasitic wasp.

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