Calcium Restores Prepenetration Morphogenesis Abolished by Methylglyoxal-Bis-Guanyl Hydrazone in Cochliobolus miyabeanus Infecting Rice     

Ahn IP  Suh SC 《Phytopathology》2007,97(3):331-337

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Visitors�� Attitudes Towards and Willingness-to-Pay for Hypothetical Hoop Pine Plantations on the Pastoral Southern Atherton Tablelands, Australia     

Jungho Suh  Robert Lwanga  Steve Harrison  John Herbohn 《Small-Scale Forestry》2011,10(3):319-338

The southern Atherton Tablelands comprises diverse green spaces??meadows, croplands, woodlots and rainforest??which are integrated into a large-scale tablelands landscape. This paper examines visitors?? perceptions of the landscape of the southern Atherton Tablelands as a form of public good and their reaction to a hypothetical alteration to the landscape of the tablelands region by establishing small-scale hoop pine plantations on degraded lands. A survey conducted in 2005 indicated that the hoop pine plantations would not reduce the public enjoyment of the tablelands landscape. From the pairwise comparisons of vegetation types, it was found that the sample of tourists statistically equally preferred the ??grazing land?? and the ??hoop pine plantation??. In contrast, the local residents were found to prefer the ??grazing land?? to the ??hoop pine plantation??, at the 5% significance level. From a double-bounded contingent valuation study, it was found that the tourists were willing to pay A$13.82 per room per visit on average to support the establishment of hoop pine plantations on the southern Atherton Tablelands whereas local residents were willing to pay A$7.86 per year for the next 5?years for the same project.  相似文献   

The genomic landscapes of human breast and colorectal cancers     

Wood LD  Parsons DW  Jones S  Lin J  Sjöblom T  Leary RJ  Shen D  Boca SM  Barber T  Ptak J  Silliman N  Szabo S  Dezso Z  Ustyanksky V  Nikolskaya T  Nikolsky Y  Karchin R  Wilson PA  Kaminker JS  Zhang Z  Croshaw R  Willis J  Dawson D  Shipitsin M  Willson JK  Sukumar S  Polyak K  Park BH  Pethiyagoda CL  Pant PV  Ballinger DG  Sparks AB  Hartigan J  Smith DR  Suh E  Papadopoulos N  Buckhaults P  Markowitz SD  Parmigiani G  Kinzler KW  Velculescu VE  Vogelstein B 《Science (New York, N.Y.)》2007,318(5853):1108-1113

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Entorhinal cortex layer III input to the hippocampus is crucial for temporal association memory     

Suh J  Rivest AJ  Nakashiba T  Tominaga T  Tonegawa S 《Science (New York, N.Y.)》2011,334(6061):1415-1420

Associating temporally discontinuous elements is crucial for the formation of episodic and working memories that depend on the hippocampal-entorhinal network. However, the neural circuits subserving these associations have remained unknown. The layer III inputs of the entorhinal cortex to the hippocampus may contribute to this process. To test this hypothesis, we generated a transgenic mouse in which these inputs are specifically inhibited. The mutant mice displayed significant impairments in spatial working-memory tasks and in the encoding phase of trace fear-conditioning. These results indicate a critical role of the entorhinal cortex layer III inputs to the hippocampus in temporal association memory.  相似文献   

Use of herbicide-resistant genic male sterility in hybrid rice seed production     

Sung Soo Kim  Jae Youn Jung  Seung Kwon Jeong  Dong Sun Lee  Li Juan Chen  Hak Soo Suh 《Euphytica》2007,156(3):297-303

One of the difficult problems in hybrid rice seed production is the low outcrossing frequency and requirement for much labor to produce hybrid seeds. In order to simplify the process of hybrid rice seed production, herbicide-resistant photoperiod sensitive genic male sterile (HRPGMS) rice was utilized in this study. The herbicide resistance gene bar was transferred into the photoperiod sensitive genic male sterile (PGMS) rice 920S by Agrobacterium-mediated transformation and the HRPGMS line YA3530ms with good agronomic characteristics was bred by applying conventional pedigree breeding technique. The seeds of HRPGMS and pollen parent were mixed with the ratio of 4:1 in weight, and were sowed in seedling box. The mixed seedlings of HRPGMS and pollen parent grown for 30 days were transplanted by the small transplanting machine in the field. The herbicide glufosinate ammonium was sprayed at 7 days after flowering to kill all the plants of pollen parent, whereas hybrid seeds were harvested from the survived HRPGMS parent at maturity. The outcrossing frequency of HRPGMS line from two combinations in 2002 and from five combinations in 2004 were compared with a control cultivated by the conventional 2-line system. As the result, the mean outcrossing frequency in HRPGMS of the treatments were 10.6–24.5% compared with 5.5% in PGMS of the control in 2002, and that were 24.7–32.0% compared with 7.5% in the control in 2004. Consequently, using HRPGMS in two-line system was proved to be a new method that would simplify the process of hybrid rice seed production and to increase outcrossing frequency without any artificial supplementary pollination processes.  相似文献   

Role of predicted metalloprotease motif of Jab1/Csn5 in cleavage of Nedd8 from Cul1     

Cope GA  Suh GS  Aravind L  Schwarz SE  Zipursky SL  Koonin EV  Deshaies RJ 《Science (New York, N.Y.)》2002,298(5593):608-611

COP9 signalosome (CSN) cleaves the ubiquitin-like protein Nedd8 from the Cul1 subunit of SCF ubiquitin ligases. The Jab1/MPN domain metalloenzyme (JAMM) motif in the Jab1/Csn5 subunit was found to underlie CSN's Nedd8 isopeptidase activity. JAMM is found in proteins from archaea, bacteria, and eukaryotes, including the Rpn11 subunit of the 26S proteasome. Metal chelators and point mutations within JAMM abolished CSN-dependent cleavage of Nedd8 from Cul1, yet had little effect on CSN complex assembly. Optimal SCF activity in yeast and both viability and proper photoreceptor cell (R cell) development in Drosophila melanogaster required an intact Csn5 JAMM domain. We propose that JAMM isopeptidases play important roles in a variety of physiological pathways.  相似文献   

Study on the effects of single fiber tensile properties on bundle tensile properties through estimation of HVI bundle modulus and toughness     

Hyun-Jin Koo  Sung Hoon Jeong  Moon W. Suh 《Fibers and Polymers》2001,2(1):22-25

The HVI properties and Mantis® single fiber tensile properties were analyzed to evaluate the relationship between fiber and bundle tensile properties. For this study, a new method has been developed for estimating the modulus and toughness of cotton fiber bundles directly from the HVI tenacity-elongation curves. The single fiber tensile properties were shown to be translated well into the bundle tensile properties. The single fiber breaking elongation was found to be the most significant contributing factor to bundle tensile properties. The bundle breaking elongation and toughness were shown to increase as the single fiber breaking elongation increased. The bundle modulus increased as the single fiber breaking elongation and/or standard deviation of single fiber breaking elongation decreased.  相似文献   

Community forestry for poverty alleviation in China with reference to Huoshan County,Anhui Province     

Jiaqi Xu  Yongjun Zhao  Jungho Suh 《Small-Scale Forestry》2004,3(3):385-400

Increasing attention has been paid to the question of whether and how community forestry links with poverty reduction in the mountainous regions in developing countries. Household-based community forestry was first implemented in Yunnan and spread over other parts of China in the 1980s. In this forestry management system, rural households are the main actors. Household forestry is a form of small-scale community forestry and suits the rural areas of China, where social overhead capital and skilled human resources are lacking. Community forestry has played a remarkable role in guiding and facilitating rural poverty alleviation in Huoshan County, Anhui Province. This paper describes how the community forestry project in Huoshan County has helped the farmers improve their livelihoods through the creation of a forestry model involving science and technology demonstration households and independent farmers’ organisations. The sustainable poverty alleviation model developed in Huoshan has proved to be effective in poverty alleviation and environmental protection, featuring the participatory forestry components of the project, namely household forestry, science and technology demonstration households, and independent farmers’ organisations. With technological and financial aid from government, the local farmers were able and willing to establish this small-scale forestry management system, planting fast-growing multiple-use tree species with substantial economic benefits.  相似文献   

Book reviews   总被引：1，自引：0，他引：1  

Sen Wang  Bill Slee  Nick Emtage  Jungho Suh 《Small-Scale Forestry》2003,2(1):109-115

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Development of a dragonfly awareness trail in an African botanical garden     

Augustine N. Suh  Michael J. Samways   《Biological conservation》2001,100(3):345-353

The IUCN/SSC Status Survey and Conservation Action Plan: Dragonflies calls for an increase in educating the public and increasing awareness of dragonflies (Odonata). Dragonflies are conspicuous and attractive, and can ‘stand in’ for other invertebrates in raising awareness of the necessity to conserve invertebrates. While reserves have been set aside for dragonfly awareness and conservation in the northern hemisphere, no such dragonfly reserves appear to exist in the southern hemisphere, despite its rich dragonfly fauna. This paper describes the development of a dragonfly-awareness trail in an established and well-visited botanical garden (The National Botanical Gardens, Pietermaritzburg, South Africa). Correlations between species and environmental variables were significantly high for six measured environmental variables: pH, percentage shade, vegetation (structural and compositional), ambient and water temperature, and water depth. Multivariate analyses of data, classified 20 a priori selected sampling units into four ecologically meaningful biotope types, each with a characteristic dragonfly assemblage. The four biotopes provided potential viewing points. To these were added a further three duplicate biotopes so as to link the trail into a circuit. Questionnaires assessed public awareness of dragonflies, and helped design a preliminary leaflet. A final trail design was drawn up along with an expanded booklet. The trail has now been implemented. Recommendations are made on the minimal scientific underpinning required for future trail design.  相似文献