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RISS 인기검색어
- 검색키워드
- 저자 : 구창덕 ( Gu Chang Deog ) (검색결과 2 건)
- 무료
- 기관 내 무료
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구창덕 ( Gu Chang Deog ),김재수 ( Kim Jae Su ),이상희 ( Lee Sang Hui ),박재인 ( Park Jae In ),안광태 ( An Gwang Tae ) 한국산림과학회 2003 한국산림과학회지 Vol.92 No.6
Water is critically important for Tricholoma matsutake(Tm) growth because it is the major component of the mushroom by over 90%. The mushroom absorbs water through the below ground hyphal colony. Therefore, the objectives of our study were to investigate spatio-temporal water changes in Tm colonies. This study was carried out at Tm fruiting sites in Sogni Mt National Park, where the below-ground fairy-ring colonies have been irrigated. To identify spatial water status within the Tm soil colony soil moisture and ergosterol content were measured at six positions including a mushroom fruiting position on the line of the colony radius. To investigate temporal soil moisture changes in the soil colony, Time Domain Reflectometry(TDR) sensors were established at the non-colony and colony front edge, and water data were recorded with CRlOX data logger from late August to late October. Before irrigation, whereas it was 12.8% at non-colony, the soil water content within Tm colony was 8.0% at 0-5cm from the colony front edge, 6.2% at 10-15cm and 6.5-7.5% at 20-40cm. And the content was 12.1% at 80cm distance from the colony edge, which is similar to that at the non-colony. In contrast, ergosterol content which is proportional to the live hyphal biomass was only 0.4pg/g fresh soil at the uncolonized soil, while 4.9 ㎍/g fresh soil at the front edge where the hyphae actively grow, and 3.8 .㎍/g fresh soil at the fruiting position, l.l ㎍/g at 20cm distance and 0.4㎍/g in the 40cm rear area. Generally, in the Tm fungal colony the water content changes were reversed to the ergosterol content changes. While the site was watered during August to October, the soil water contents were 13.5-23.0% within the fungal colony, whereas it was 14.5-26.0% at the non-colony. That is, soil water content in the colony was lower by 1.0-3.0% than that in the non-colonized soil. Our results show that Tm colony consumes more soil water than other parts. Especially the front 30cm within the hyphal colony parts is more critical for soil water absorption.
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