독도 돌피의 분류학적 실체

최경수,손오경,손성원,김상준,유광필,박선주 한국자원식물학회 2013 한국자원식물학회지 Vol.26 No.4

독도에 자생하는 벼과(Poaceae) 식물인 돌피(Echinochloa crus-galli (L.) Beauv.)와 물피(Echinochloa crus-galli var. echinata (Willd.) Honda)의 분류학적 실체를 조사하였다. Echinochloa crus-galli complex에 속하는 2분류군26개체에 대한 ITS, trnH-psbA 및 trnL-F의 염기서열을분석하였다. 그 결과 독도의 돌피와 물피를 포함한 조사된두 분류군은 유전자구간에서 동일한 염기서열을 나타내는것으로 관찰되었다. 따라서 호영 및 까락 등의 연속적인 형질로 두 분류군을 구분하는 기존의 형태형질에 근거한 분류학적 처리는 재고가 필요할 것으로 보인다. 한편, ITS 경우, 독도에서 채집된 물피와 돌피 개체들은 울릉도 및 육지에서 채집된 개체들과는 별개의 분계조를 형성함으로써 독립된 진화 경로를 거치고 있음을 보여 주었다. Molecular study were conducted to evaluate taxonomic identities of Echinochloa crus-galli (L.) Beauv. and Echinochloa crus-galli var. echinata (Willd.) Honda in Dokdo. Echinochloa crus-galli complex of two species 26individuals analyse based on nuclear ribosomal DNA (ITS region) and cpDNA (trnH-psbA, trnL-F). At a result, two species were same sequence. Characters the length of the lemma and the length of the awn traits were identity of the species was unclear. According to, Taxonomy treatments that is based on existent morphological characters should thinks again. On the other hand, in the case of ITS, Echinochloa crus-galli (L.) Beauv. and Echinochloa crus-galli var. echinata (Willd.) Honda at the Dokdo forms from other clades with individuals that is collected at land area and Ulleungdo. These result is showing that is flowing independent evolution trends.

Genetic diversity and herbicide resistance of 15 Echinochloa crus-galli populations to quinclorac in Mekong Delta of Vietnam and Arkansas of United States

Le, Duy,Nguyen, Chon M.,Mann, Richard K.,Yerkes, Carla N.,Kumar, Bobba V.N. The Korean Society of Plant Biotechnology 2017 식물생명공학회지 Vol.44 No.4

Barnyardgrass (Echinochloa crus-galli) is one of the worst weeds in rice (Oryza sativa), but there are few reports about the genetic diversity and herbicide resistance of barnyardgrass in Vietnam. In this study, we used random amplified polymorphic DNA (RAPD) analysis and greenhouse testing to study the genetic diversity and quinclorac resistance levels of 15 Echinochloa crus-galli populations in the Mekong Delta, Vietnam, and the state of Arkansas, U.S. The quinclorac resistance of Echinochloa crus-galli populations in Vietnam was confirmed; 9 populations were resistant to quinclorac with R/S ratios ranging from 1.9 to 6.3. Six oligonucleotide primers produced a total of 55 repeatable bands of which 46 were polymorphic (83.3% average) among the 15 populations. Genetic distance was calculated, and cluster analysis separated the 15 populations into 2 main clusters with the genetic distances within the clusters ranging from 0.09 to 0.39. The two main clusters were divided into 7 subclusters, and the quinclorac resistant and susceptible populations were located randomly within each subcluster. Six out of 13 weed populations from Vietnam belonged to one cluster and a single Echinochloa species. The remaining 7 populations were identified as potentially different species in the Echinochloa genus. Nine Echinochloa populations from Vietnam were tested and identified as quinclorac resistant. The connection between quinclorac resistance levels and weed groups defined by RAPD analysis in the study is unclear; the quinclorac resistance of each resistant population could have evolved individually, regardless of differences in genetic diversity and location of the sampled populations.

Genetic diversity and herbicide resistance of 15 Echinochloa crus-galli populations to quinclorac in Mekong Delta of Vietnam and Arkansas of United States

Duy Le,Chon M. Nguyen,Richard K. Mann,Carla N. Yerkes,Bobba V. N. Kumar 한국식물생명공학회 2017 JOURNAL OF PLANT BIOTECHNOLOGY Vol.44 No.4

Barnyardgrass (Echinochloa crus-galli) is one of the worst weeds in rice (Oryza sativa), but there are few reports about the genetic diversity and herbicide resistance of barnyardgrass in Vietnam. In this study, we used random amplified polymorphic DNA (RAPD) analysis and greenhouse testing to study the genetic diversity and quinclorac resistance levels of 15 Echinochloa crus-galli populations in the Mekong Delta, Vietnam, and the state of Arkansas, U.S. The quinclorac resistance of Echinochloa crus-galli populations in Vietnam was confirmed; 9 populations were resistant to quinclorac with R/S ratios ranging from 1.9 to 6.3. Six oligonucleotide primers produced a total of 55 repeatable bands of which 46 were polymorphic (83.3% average) among the 15 populations. Genetic distance was calculated, and cluster analysis separated the 15 populations into 2 main clusters with the genetic distances within the clusters ranging from 0.09 to 0.39. The two main clusters were divided into 7 subclusters, and the quinclorac resistant and susceptible populations were located randomly within each subcluster. Six out of 13 weed populations from Vietnam belonged to one cluster and a single Echinochloa species. The remaining 7 populations were identified as potentially different species in the Echinochloa genus. Nine Echinochloa populations from Vietnam were tested and identified as quinclorac resistant. The connection between quinclorac resistance levels and weed groups defined by RAPD analysis in the study is unclear; the quinclorac resistance of each resistant population could have evolved individually, regardless of differences in genetic diversity and location of the sampled populations.

국내에 유입되는 열대피(Echinochloa colona) 동정: DNA 바코드 중심

이정란,김창석,이인용 한국잔디학회 2015 Weed & Turfgrass Science Vol.4 No.3

Echinochloa colona is one of the most problematic weeds in the paddy fields of the world. In recent years, this species is likely to be introduced in Korea due to global warming, the expansion of international trade including agricultural products, and increasing tourists. We tried to identify the species from Korean Echinochloa crus-galli and E. oryzicola in order to establish the control measures in case of the initial influx. For this study, Echinochloa colona collected from the National Plant Germplasm System, USA were examined and E. crus-galli and E. oryzicola were collected in Korea. It is, however, very difficult to identify for Echinochloa species using morphological characters because of numerous interspecific and intraspecific types found in nature. Thus, we barcoded the species using rbcL, matK, and ITS. All three markers identified E. colona very well from the others. ITS alone may be enough as a DNA barcode for E. colona identification, when considering cost and effectiveness. The barcode sequences were deposited to the National Center for Biotechnology Information database for public use. 열대피와 같은 논농사지역의 악성잡초는 국내에 유입될경우 문제 잡초로 정착될 가능성이 높기 때문에 유입되는초기에 방제가 될수 있도록 정확한 동정이 되어야한다. 그러나 피속 잡초는 형태적으로 연속변이가 많이 존재하여종간 구별이 매우 어려운 잡초이다. 본 연구는 미국 NPGS 에서 분양받은 열대피와 국내에서 채집한 돌피와 논피를고등식물 표준바코드 마커 rbcL과 matK를 이용하여 바코드하고, 추가적으로 핵 DNA ITS 부위를 바코드하여 표준바코드 구간과 ITS 구간의 열대피를 동정할 수 있는 능력과 바코드 활용성을 비교하였다. 바코드 결과, rbcL은 0.36%, matK는 0.29%, ITS는 3.2%의 열대피 특이 염기서열이 조사되었고 Neighbor-joining 계통수에서 종별 유집이 뚜렷하게 나타나 표준바코드 마커와 ITS 모두 쉽고 간편하게 열대피를 국내의 돌피, 논피와 동정할 수 있었다. 특히 ITS는분석구간은 짧지만 열대피를 국내의 논피, 돌피와 정확하게 구분해낼 수 있어서 ITS 단독으로 국내에 유입되는 열대피 동정에 활용할 수 있을 것으로 생각한다.

Adaptive Diversity of Echinochloa Species to Osmotic Stress

박선주,유혜진,육민정,김도순 한국잔디학회 2016 Weed & Turfgrass Science Vol.5 No.4

Three Echinochloa species inhabit various crop fields with different soil moisture conditions. Therefore, a growth pouch test was conducted to investigate adaptive diversity of six Echinochloa species, three from Korea and three from USA, to osmotic stress by assessing shoot and root growths. Echinochloa crus-galli var. praticola showed the greatest tolerance to osmotic stress in both root (GR50=1316.3 g PEG L−1) and shoot (GR50=212.2 g PEG L−1) growths, while Korean E. oryzicola was most sensitive to osmotic stress in both root (GR50=116 g PEG L−1) and shoot (GR50=126.2 g PEG L−1) growths. Root to shoot (R/S) ratio of Echinochloa crus-galli var. praticola increased with increasing osmotic stress, while that of Korean E. oryzicola decreased, suggesting that R/S ratio is closely related to osmotic stress tolerance in Echinochloa species. Our results clearly demonstrate that E. crus-galli var. praticola maintains high R/S ratio even under high osmotic stress, which enables this species to well adapt to dry upland condition. In contrast, while E. oryzicola fails to maintain sufficiently high R/S ratio, resulting in poor adaptability to dry upland condition.

Adaptive Diversity of Echinochloa Species to Osmotic Stress

Park, Seon-Ju,Yu, Hye-Jin,Yook, Min-Jung,Kim, Do-Soon The Korean Society of Weed ScienceThe Turfgrass So 2016 Weed & Turfgrass Science Vol.5 No.4

Three Echinochloa species inhabit various crop fields with different soil moisture conditions. Therefore, a growthpouch test was conducted to investigate adaptive diversity of six Echinochloa species, three from Korea and three from USA, toosmotic stress by assessing shoot and root growths. Echinochloa crus-galli var. praticola showed the greatest tolerance to osmoticstress in both root ($GR_{50}=1316.3g\;PEG\;L^{-1}$) and shoot ($GR_{50}=212.2g\;PEG\;L^{-1}$) growths, while Korean E. oryzicola was mostsensitive to osmotic stress in both root ($GR_{50}=116g\;PEG\;L^{-1}$) and shoot ($GR_{50}=126.2g\;PEG\;L^{-1}$) growths. Root to shoot (R/S) ratioof Echinochloa crus-galli var. praticola increased with increasing osmotic stress, while that of Korean E. oryzicola decreased, suggestingthat R/S ratio is closely related to osmotic stress tolerance in Echinochloa species. Our results clearly demonstrate that E. crus-galli var.praticola maintains high R/S ratio even under high osmotic stress, which enables this species to well adapt to dry upland condition. Incontrast, while E. oryzicola fails to maintain sufficiently high R/S ratio, resulting in poor adaptability to dry upland condition.

Adaptive Diversity of Echinochloa Species to Osmotic Stress

Seon-Ju Park,Hye-Jin Yu,Min-Jung Yook,Do-Soon Kim 한국잡초학회·한국잔디학회 2016 Weed & Turfgrass Science Vol.5 No.4

Three Echinochloa species inhabit various crop fields with different soil moisture conditions. Therefore, a growth pouch test was conducted to investigate adaptive diversity of six Echinochloa species, three from Korea and three from USA, to osmotic stress by assessing shoot and root growths. Echinochloa crus-galli var. praticola showed the greatest tolerance to osmotic stress in both root (GR50=1316.3 g PEG L<SUP>−1</SUP>) and shoot (GR50=212.2 g PEG L<SUP>−1</SUP>) growths, while Korean E. oryzicola was most sensitive to osmotic stress in both root (GR50=116 g PEG L<SUP>−1</SUP>) and shoot (GR50=126.2 g PEG L<SUP>−1</SUP>) growths. Root to shoot (R/S) ratio of Echinochloa crus-galli var. praticola increased with increasing osmotic stress, while that of Korean E. oryzicola decreased, suggesting that R/S ratio is closely related to osmotic stress tolerance in Echinochloa species. Our results clearly demonstrate that E. crus-galli var. praticola maintains high R/S ratio even under high osmotic stress, which enables this species to well adapt to dry upland condition. In contrast, while E. oryzicola fails to maintain sufficiently high R/S ratio, resulting in poor adaptability to dry upland condition.

Taxonomic Review of the Genus Echinochloa in Korea (II): Inferred from Simple Sequence Repeats

이정란,김창석,이인용 한국잔디학회 2014 Weed & Turfgrass Science Vol.3 No.3

Echinochloa (L.) P. Beauv. includes some of the noxious weeds, causing a serious yield loss when they are dominantin the fields. Identification of the Echinochloa is very difficult because many interspecific and intraspecific forms of the species arefound. However, it is important to identify the species exactly and to know the genetic diversity of the species for effective weedmanagement. This study was conducted to identify and summarize the Echinochloa species by comparing the genetic variationand relationship among Korean Echinochloa species using SSR. The genetic diversity of 107 individuals, including seven specieswere assessed using five SSR markers. UPGMA dendrogram generated two clades (I and II) and clade II divided again into twosubclades (II-1 and II-2) whereas the model based genetic structure proposed four subpopulations. The two subpopulations werecorresponded to clades I and II-1 and the other two were arranged to clade II-2 of the UPGMA dendrogram. We have concludedthat E. colona and E. glabrescens might have not distributed in Korea. The biological varieties, praticola and echinata, of E. crus-gallishould be treated as E. crus-galli. Korean Echinochloa should be summarized with four species, i.e., E. oryzicola, E. crus-galli, E. esculenta, and E. oryzoides.

무경운 논에서 하계 자생사료작물의 파종량이 생육특성 및 수량에 미치는 영향

정종성,최보람,이세영,오미래,박형수,최기춘 한국초지조사료학회 2023 한국초지조사료학회지 Vol.43 No.1

This experiment was carried out to determine effects of seed rate of native grasses, called native summer forage crops (NSFC), on their growth characteristics and yields in no-tillage paddy fields in central provinces. NSFC cultivation was performed according to the agricultural guidelines of the Rural Development Administration (RDA) during 2020 to 2022. Echinochloa crusgalli ‘Jeju native’, Setaria viridis ‘Korean native type’, Digitaria sanguinalis ‘Korean native type’) were sown by various seed rate in the experimental field (3m × 4m plot) of Department of Animal Resources Development, Seonghwan–eup, Cheonan, Korea in late-May or early-June for 3 years and harvested in middle-September. Dry matter yields (DMY) in Echinochloa crusgalli and Setaria viridis increased as increasing seed rate. DMY in 40 kg ha-1 of Echinochloa crusgalli was the highest and DMY in 60 kg ha-1 of Setaria viridis was the highest. However, All treatments of Digitaria sanguinalis showed similar DMY. Yields of NSFC were the order of Echinochloa crusgalli (9,681~11,092 kg ha-1) > Digitaria sanguinalis (8,311~9,023 kg ha-1) >etaria viridis (3,145~4,749 kg ha-1). The contents of crude protein in NSFC were the order of Digitaria sanguinalis > Echinochloa crusgalli > Setaria viridis. The contents of ADF and NDF in NSFC were the order of Echinochloa crusgalli > Digitaria sanguinalis > Setaria viridis. As shown in above results, we suggest that introduction of NSFC is one of the most important skills in order to stably increase yields of forage crops for utilization of the double cropping system in no-tillage paddy fields.

제초제 저항성 잡초 강피, 물달개비, 올챙이고랭이 동시 우점한논에서 효과적인 제초관리

박태선,조현숙,황재복,구본일,김학신,서명철,박홍규,이건휘 한국잔디학회 2015 Weed & Turfgrass Science Vol.4 No.3

This study was conducted to establish the effective weed management methods in rice field simultaneously dominated by the herbicide resistant Echinochloa oryzicola, Monochoria vaginalis and Scirpus juncoides. Herbicides registered for use before transplanting, oxadiazon 12% EC, pyrazolate 36% SC, pretilachlor 14% EC and thiobencarb 50% EC were effective until 0.5 leaf stage of herbicide resistant Echinochloa oryzoides. Herbicides registered for use after transplanting, fentrazamide 1% GR and mefenacet 18% SC were effective until 2 leaf stage of herbicide resistant Echinochloa oryzicola and triafamone 0.98% SC was possible to control up to 4 leaf stage. HPPD inhibitors, benzobicyclon, mesotrione and tefuryltrione SC, were simultaneously effective to SU herbicide-resistant Monochoria vaginalis and Scirpus juncoides. Herbicides registered for use before transplanting, benzobicyclon + oxadiargyl EC out of the tested herbicide was most effective in rice field simultaneously dominated by the herbicide resistant Echinochloa oryzicola, Monochoria vaginalis and Scirpus juncoides. Its effectiveness rises in proportion to flooding duration. Mazosulfuron GR, a herbicides registered for use after transplanting was most effective without phytotoxicity until 60 days after transplanting in rice field simultaneously dominated by the herbicide resistant Echinochloa oryzicola. 본 실험은 ACCase 및 ALS 저해제들에 대한 저항성 강피와 sufonylurea (SU)계 제초제들에 대한 저항성 물달개비및 올챙이고랭이가 동시에 우점한 논에서 이들 잡초들을효과적으로 방제하는 방법을 구명하기 위하여 실시하였다. 인공기상실 실험에서 저항성 강피 0.5엽기까지는 이앙 전에 사용하는 oxadiazon 12% 유제, pyrazolate 36% 액상수화제, pretilachlor 14% 유제 그리고 thiobencar 50% 유제들이 완전하게 방제하였다. Fentrazamide 1% 입제와 mefenacet 18% 액상수화제는 저항성 강피 2엽기까지, 그리고 triafamone 0.98% 액상수화제는 4엽기까지 효과적으로 방제되었다. SU계 제초제들에 대한 저항성 물달개비와 올채이고랭이는 HPPD 저해제들인 benzobicyclon, mesotrione 그리고tefuryltrione 액상수화제들이 효과적이었다. 한편 . 제초제저항성 강피, 물달개비 그리고 올챙이고랭이가 동시적으로우점한 논에서 이앙 전 처리제들 중에서 benzobicyclon + oxadiargyl 유제가 가장 효가 좋았다. 그리고 올챙이고랭이가 동시적으로 우점한 논에서 이앙 후 12일에 처리한 제초제들 중에서 matazosulfuron입제가 이앙 후 60일까지 가장효과적이었다.