http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Howlader, Jewel,Park, Jong-In,Kim, Hoy-Taek,Ahmed, Nasar Uddin,Robin, Arif Hasan Khan,Sumi, Kanij Rukshana,Natarajan, Sathishkumar,Nou, Ill-Sup Springer New York 2017 Tropical plant biology Vol.10 No.4
<P> Mildew Locus O (MLO) gene family members have significant functions in plant responses to biotic and abiotic stresses. Here, we retrieved 14 MLO sequences designated as Cucumis melo MLO (CmMLO) fromthemelon genome database 'Melonomics'. Phylogenetic analysis distributed the 14 predicted CmMLO proteins into five of the six distinct MLO clades. Tissue-specific reverse-transcription quantitative PCR (RT-qPCR) analysis using the C. melo 'SCNU1154' line revealed that 14 CmMLO genes were differentially expressed, suggesting their probable roles in specific processes of growth and development. Analysis of stress-induced expression revealed that five of the CmMLO genes were upregulated at 6 h post inoculation (dpi) with Podosphaera xanthii Race 1 or DH487, indicating a possible role for MLO proteins in the host cell as an initial step of disease progress. Seven CmMLO genes were upregulated at 10 d post inoculation (dpi) with both races, timing that corresponds to disease appearance at the later stage of infection. RT-qPCR analysis also revealed that all 14 CmMLO genes were up-regulated under drought stress, 13 were upregulated under salt stress, 10 were upregulated under heat stress, 4 were upregulated under cold, and 12 were upregulated under abscisic acid (ABA) treatment. This information regarding the stress-responsive behavior of CmMLO genes creates a window for developing stress-resistant cultivars in the Cucurbitaceae. </P>
Jewel Howlader,Yeji Hong,Sathishkumar Natarajan,Kanij Rukshana Sumi,Hoy-Taek Kim,Jong-In Park,Ill-Sup Nou 한국원예학회 2020 Horticulture, Environment, and Biotechnology Vol.61 No.2
Melon ( Cucumis melo L.), belonging to the Cucurbitaceae family, is cultivated worldwide and is highly valued for its fruitquality. However, this important crop is negatively aff ected by several races of powdery mildew (PM) fungus, Podosphaeraxanthii . Hence, exploration of PM race-specifi c resistant markers would be an eff ective strategy to develop race-specifi cmelon cultivars. Young leaves from four melon genotypes, including susceptible SCNU1154 and race-specifi c-resistantEdisto47, PMR5, and MR1 lines, were sequenced by next-generation sequencing, specifi cally whole-genome resequencing(WGR), to detect race-specifi c single nucleotide polymorphism (SNP) markers. Including putative resistance gene ( R -gene)SNPs, 168, 83, and 122 race 5-specifi c SNPs with the exact variation were identifi ed on PM-related chromosome 2, 5, and12, respectively, for distinguishing race-specifi c lines by comparing the WGR data in the C. melo genome. Based on proximityto the PM resistance quantitative trait loci (QTLs) in physical maps, 43, 37, and 48 SNPs were screened on chromosome2, 5, and 12, respectively. Using a derived cleaved amplifi ed polymorphic sequence (dCAPS) method, polymorphismswere only found in three SNPs (SNPR5_119, SNPR5_120, and SNPR5_121) out of 48 against race 5 on chromosome 12. Among these three, a putative R -gene, an NBS-LRR-type SNP, SNPR5_119, displayed similar genotypic and phenotypicvariation to race 5-specifi c susceptible (SCNU1154, PMR45, WMR29, and Edisto47) and resistant (PI414723, PMR5, andMR1) lines in C . melo except for PI124112. Importantly, two other intergenic SNPs, SNPR5_120 and SNPR5_121, showedgenotypic and phenotypic variation between susceptible and resistant lines tested. High-resolution melting (HRM) analysiswas used to further validate the same expression patterns of SNPR5_120 as a dCAPS method in all lines tested. Therefore,the identifi ed PM race 5-specifi c candidate markers described here might be useful for a marker-assisted selection breedingprogram in C. melo .
( Jewel Howlader ),( Kanij Rukshana Sumi ),( Hoy Taek Kim ),( Arif Hasan Khan Robin ),( Jong In Park ),( Mi Young Chung ),( Ill Sup Nou ) 한국육종학회 2016 Plant Breeding and Biotechnology Vol.4 No.2
Powdery mildew (PM) is a severe fungal disease for melon cultivation worldwide. Stress resistance related genes could be important tools to address this problem. In this study, we retrieved defense related peroxidase and glucan synthase genes from Melon Genome Database ``Melonomics``. Thereafter, we analyzed the genes in silico. We conducted protein blast in the NCBI database and found a high degree of homology among them. Based on the highest protein homology we named two isoforms of Cucumis melo peroxidase 2-like genes (CmPrx2-1 and CmPrx2-2) and one glucan synthase1-like gene (CmGLS1). In reverse transcriptionpolymerase chain reaction (PCR), all 3 genes showed organ specific expression in a C. melo line, SCNU1154. Real-time quantitative PCR expression of these 3 genes was conducted in the infected leaf samples by PM fungus Podosphaera xanthii and also treated leaf samples by exogenous phytohormones (salicylic acid and methyl jasmonate). The CmPrx2-2 gene was up-regulated in response to all seven races of PM fungus whereas up-regulation or down-regulation of CmPrx2-1 gene was race-specific. The CmGLS1 gene was down-regulated in response to all races except one race. The CmPrx2-1, CmPrx2-2, and CmGLS1 genes were up-regulated under both salicylic acid and methyl jasmonate treatments but their level of expression was higher in salicylic acid treated plants compared to methyl jasmonate. Therefore, we speculate that defense response of the three tested genes is largely mediated by the salicylic acid signaling pathway under PM infection. Taken together, the data presented herein may be useful resources in the development of PM stress resistant in C. melo L.
Jewel Howlader(쥬엘 하울라다),Hoy-Taek Kim(김회택),Jong-In Park(박종인),Nasar Uddin Ahmed(나잘우딘 아메드),Arif Hasan Khan Robin(아리프 핫산 칸 로빈),Hee-Jeong Jung(정희정),Ill-Sup Nou(노일섭) 한국생명과학회 2016 생명과학회지 Vol.26 No.4
멜론 흰가루병(Podosphaera xanthii)은 멜론 생산량에 영향을 미치는 중요한 병해 중 하나로 알려져 있다. 작물육종에 있어서 흰가루병을 포함한 병저항성 계통 육성은 병저항성 관련 유전자들의 유전양식 및 그 유전자들을 조절하는 식물호르몬에 대한 정보는 매우 중요하다. 식물에 있어 흰가루병균 저항성에 관여한다고 알려진 Mildew Resistance Locus O (MLO) 유전자를 멜론 database인 ‘Melonomics’으로부터 14개 동정하여 CmMLO1~14 (Cucumis melo MLO)로 표기하였다. 동정된 14개의 CmMLO유전자들의 아미노산 서열을 비교한 결과, 9개의 CmMLO 유전자들은 흰가루병균에 대한 감수성 관련 아미노산 cysteine과 proline이 잘 보존되어 있었지만, 나머지 CmMLO 유전자들은 다른 아미노산 서열을 가지고 있었다. 멜론 흰가루병의 7 race에 대하여 이병성을 나타내는 멜론 계통‘SCNU1154’에 멜론 흰가루병균(P. xanthii)을 접종하고, 식물호르몬(metyl jasmonate와 salicylic acid) 처리한 후 qPCR을 통해 CmMLO 유전자들의 상대적인 발현양을 분석한 결과, 멜론 흰가루병 7 race에 대하여 14개의 CmMLO 유전자들 중 3개의 유전자들에서 발현이 증가하였고, 7개의 유전자들은 발현이 감소하였으며, 4개의 CmMLO 유전자들은 race 특이적으로 발현양이 증가 혹은 감소하였다. 또한 14개의 CmMLO 유전자들의 발현양은 methyl jasmonate와 salicylic acid를 처리하였을 때 다양한 발현 양상을 나타내었다. 11개의 CmMLO 유전자들은 salicylic acid 처리하였을 때 발현양이 증가하였으며, 7개의 유전자들은 methyl jasmonate 처리하였을 때 발현양이 증가하였다. 이와 같이, 스트레스에 반응을 보이는 CmMLO 유전자들은 멜론 흰가루병 저항성 계통 육성을 위한 유용한 정보가 될 것으로 기대된다. Powdery mildew disease caused by Podosphaera xanthii is a major concern for Cucumis melo production worldwide. Knowledge on genetic behavior of the related genes and their modulating phytohormones often offer the most efficient approach to develop resistance against different diseases. Mildew Resistance Locus O (MLO) genes encode proteins with seven transmembrane domains that have significant function in plant resistance to powdery mildew fungus. We collected 14 MLO genes from ‘Melonomics’ database. Multiple sequence analysis of MLO proteins revealed the existence of both evolutionary conserved cysteine and proline residues. Moreover, natural genetic variation in conserved amino acids and their replacement by other amino acids are also observed. Real-time quantitative PCR expression analysis was conducted for the leaf samples of P. xanthii infected and phytohormones (methyl jasmonate and salicylic acid) treated plants in melon ‘SCNU1154’ line. Upon P. xanthii infection using 7 different races, the melon line showed variable disease reactions with respect to spread of infection symptoms and disease severity. Three out of 14 CmMLO genes were up-regulated and 7 were down-regulated in leaf samples in response to all races. The up- or down-regulation of the other 4 CmMLO genes was race-specific. The expression of 14 CmMLO genes under methyl jasmonate and salicylic acid application was also variable. Eleven CmMLO genes were up-regulated under salicylic acid treatment, and 7 were up-regulated under methyl jasmonate treatments in C. melo L. Taken together, these stress-responsive CmMLO genes might be useful resources for the development of powdery mildew disease resistant C. melo L.
Kanij Rukshana Sumi,김수철,Jewel Howlader,Md Rajib Sharker,최갑성,최상기,박종인,노일섭,고강희 한국해양과학기술원 2019 Ocean science journal Vol.54 No.3
A carbonic anhydrase VII gene, encoding 277 amino acids, was identified in the intestinal tissue of pufferfish (Takifugu rubripes). The translated protein with an 833-bp complete coding sequence derived from the 1378-bp cloned sequence showed 83% identity with swamp eel CA VII, 76% with zebrafish CA VII, and 77% with coho salmon CA VII-like protein. The cloned protein also showed 68–69% identity with mammalian CA VII. The predicted molecular weight and iso-electric point of the protein were 30.84 kDa and 6.07, respectively. Active site analysis of the pufferfish CA VII indicated that most of the important residues involved in catalytic activity were highly conserved, whereas four cysteine residues at positions 55, 103, 184, and 275 differed from those in human CA II, and were related to cell-defense mechanisms against oxidative damage. Phylogenetic analysis showed that the cloned sequence was clustered within the fish CA VII clade and close to the swamp eel CA VII. Structural modeling of the pufferfish CA VII protein revealed the conservation of zinc binding histidine residues (zinc ion and histidine residues). Differential expression patterns of the pufferfish CA VII were determined with semiquantitative reverse transcription (RT)-PCR and quantitative PCR (q-PCR) as well. The results of q-PCR revealed that the pufferfish CA VII was highly expressed in intestinal tissue. The pufferfish CA VII was also detected within intestinal tissue sections using an in situ hybridization assay.