잔디 엽병을 유발하는 잠재인자로서의 남조류 (Blue-Green algae)에 대한 관찰 보고 (Blue-green algae as a Potential agent Causing Turf Leaf Disease)

서지정보

· 발행기관 : 한국잔디학회
· 수록지 정보 : Weed & Turfgrass Science / 22권 / 2호 / 161 ~ 170페이지
· 저자명 : 박대섭, 이형석, 홍범석, 최병만, 전재찬

초록

Recently irregular dark-colored patches were found on the Kentucky teeing ground in
a golf course in Gyunggi providence. Interestingly, blue-green algae from the leaf tissue
sample containing black spot-stained symptoms were largely observed through
microscopic study. In general, algae present on the upper soil surface or in the upper
layer of root zone form dark brown layers of scum or crust, which invoked harmful
effects to turf growth such as poor drainage, inhibition of new root development. In
this observation, unlike the algae were sometime found in senescing leaves on
contacted soil in July and August, the blue-green algae were detected within black
spot-stained Kentucky bluegrass leaf tissues including leaf blade, ligule, auriclea as well
as leaf sheath. The blue-green algae were also detected on the leaf and stem tissue
adjacent to the symptomatic leaf tissues. Two species of blue-green algae, Phomidium
and Oscillatoria, were greatly observed. Oscillatoria species was more commonly
notified in all samples. In addition, the two species were found on a putting green
showing yellow spot disease at another golf course in Gyunggi providence. The data
from chemical control assay revealed that chemicals such as propiconazole, iprodione,
and azoxystrobin decreased blue-green algae population and leaf spots, which finally
resulted in enhanced leaf quality. All taken together, we strongly suggested that the
disease-like phenomenon by blue-green algae might be very closely mediated with
infection/ translocation process in relation with turfgrass. It indicates that blue-green
algae in turf management may play an adverse role as a secondary barrier as well as a
pathogenic agent. This report may be helpful for superintendents to recognize and
understand the fact that algae control should be provided more cautiously and seriously
than we did previously in upcoming golf course management.

영어초록

Recently irregular dark-colored patches were found on the Kentucky teeing ground in
a golf course in Gyunggi providence. Interestingly, blue-green algae from the leaf tissue
sample containing black spot-stained symptoms were largely observed through
microscopic study. In general, algae present on the upper soil surface or in the upper
layer of root zone form dark brown layers of scum or crust, which invoked harmful
effects to turf growth such as poor drainage, inhibition of new root development. In
this observation, unlike the algae were sometime found in senescing leaves on
contacted soil in July and August, the blue-green algae were detected within black
spot-stained Kentucky bluegrass leaf tissues including leaf blade, ligule, auriclea as well
as leaf sheath. The blue-green algae were also detected on the leaf and stem tissue
adjacent to the symptomatic leaf tissues. Two species of blue-green algae, Phomidium
and Oscillatoria, were greatly observed. Oscillatoria species was more commonly
notified in all samples. In addition, the two species were found on a putting green
showing yellow spot disease at another golf course in Gyunggi providence. The data
from chemical control assay revealed that chemicals such as propiconazole, iprodione,
and azoxystrobin decreased blue-green algae population and leaf spots, which finally
resulted in enhanced leaf quality. All taken together, we strongly suggested that the
disease-like phenomenon by blue-green algae might be very closely mediated with
infection/ translocation process in relation with turfgrass. It indicates that blue-green
algae in turf management may play an adverse role as a secondary barrier as well as a
pathogenic agent. This report may be helpful for superintendents to recognize and
understand the fact that algae control should be provided more cautiously and seriously
than we did previously in upcoming golf course management.

참고자료

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