The GeBP gene family, known for its GLABROUS1 enhancer-binding proteins, represents a standard transcription factor characterized by an unconventional leucine-zipper motif. The constituents of this family possess a core DNA-affinity domain. This protein is crucial for controlling plant growth and development. GeBP genes have been analyzed and defined only in some Gramineae crops, Arabidopsis, rice and soybean. However, a comprehensive examination of the role of the GeBP genes in Brassica rapa has yet to be conducted. This study used genome-wide characterization to identify twenty BrGeBP genes and accessible RNA sequencing data to evaluate each gene's expression. Based on phylogenetic research, we grouped 114 GeBP proteins from five different plant species into six groups. Generally, groupings of BrGeBP genes with comparable motifs and exon-intron distribution were conserved. The twenty BrGeBP genes were found on six of the ten B. rapa chromosomes, and one paralog showed segmental duplication. The varied protein motifs and gene structures showed that the GeBP genes had various roles in plants. The functions of BrGeBP genes are numerous and include expressions responsive to specific tissues, stress, and hormones according to cis-elements analysis. Furthermore, expression analysis using RNA sequencing revealed that the genes BrGeBP3, BrGeBP9, and BrGeBP20 showed substantially increased expression in different organs. These findings will aid in elucidating the possible roles and traits of BrGeBP genes in the B. rapa biological cycle and related species.

A resurrection has started in haploid and double haploid research in the twenty-first century. The haploid and double haploid could be achieved through in vivo and in vitro anther and microspore culture techniques. Fixing the homozygosity is the most striking benefit of androgenesis. Various factors like genotypic dependency, growth condition, developmental stage of the microspore, pre-treatment, culture media, regeneration media, growth hormones, and various chemicals have a direct effect. Wheat, rice, Brassica, and tobacco are the notable crops where anther and microspore culture has been utilized. These haploidy and double haploidy through anther culture served many purposes of basic and applied research. Especially, double haploid cultivars have been cultivating around the globe. In addition, for chromosome mapping, QTL mapping, marker-assisted selection, marker-assisted backcrossing, mutation breeding, genome-wide association study, genomic engineering, and genome editing, androgenesis based haploid and double haploid plants have been exploited due to the effectiveness. Recently, researchers are trying to explain albinism that happens during anther culture from an epigenetic perspective. Further prospects of haploid and doubled haploid research through anther culture have been described in this review.

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Interspecific hybridization creates new genetic variants. Embryo formation and subsequently fertile seed development are the indicators of successful interspecific hybridization. Often interspecific hybridization is limited due to variations in genome and ploidy levels. The technique of embryo rescue is commonly used in interspecific hybridization to facilitate the survival of embryos from abortion. The effectiveness of an embryo rescue program in the Brassica species depends on embryo age, embryo development stage and media composition. Embryo rescue protocol could be effectively utilized to solve some major problems of the oilseed Brassica growers including blackleg, clubroot and Alternaria disease resistance, salinity, and drought tolerance etc. This review article discusses the prospects of developing novel Brassica hybrid genotypes with desirable traits through embryo rescue.

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Wheat is globally an important cereal crop. Environmental stress, especially drought stress can play an important role in the reduction of plant growth, specifically during germination in arid and semi-arid regions. Polyethylene glycol (PEG) treated hydroponic conditions create negative osmotic potential which is compared with moisture deficit stress. The main
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Rice is globally one of the most important cereal crops that faces osmotic stress under any kind of abiotic stresses. An experiment was conducted under controlled condition to study the effects of polyethylene glycol (PEG) induced osmotic stress on root and root hair morphology and associated biochemical traits in four morphologically diverse rice genotypes. Plants were grown hydroponically. Two treatments, 0% (control) and 5% PEG 6000 (w/v), were imposed on 38 days old plants for 17 days’ duration. Main root axis length at first three youngest root bearing phytomers (Pr1-Pr3) was increased in Binadhan-11 but decreased in Binadhan-7 and BRRI dhan 71 under 5% PEG treatment compared to control. This result indicated that Binadhan-11 increased new root length perhaps to explore stress free environment. Length of L-type first order lateral root was also significantly increased by 2.03 fold in Binadhan-11 under 5% PEG treatment compared to control. Density and length of root hairs were increased at first order lateral roots in Binadhan-11 under 5% PEG treatment compared to control treatment those contributed largely to root surface area. Measurements of H₂O₂ and MDA revealed that Binadhan-11 was less affected by the oxidative damage caused by PEG. Data provides insight into the root morphological plasticity of four morphologically diverse rice varieties under PEG-induced osmotic stress.

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Plant AT-rich sequence and zinc-binding (PLATZ) proteins constitute a plant-specific transcription factor family with two conserved zinc-dependent DNA-binding domains. The PLATZ proteins operate significant functions in regulating plant development and resistance. To date, PLATZ genes have been studied only in a few model plants, including Arabidopsis, rice, maize and soybean, but not yet in any Brassica species. We identified 24 Brassica rapa PLATZ gene family (BrPLATZ) genes through genome-wide characterization and profiled their expression using available RNA-Sequencing data. We divided 153 PLATZ proteins from eight plant species into seven groups based on sequence alignment and phylogeny. The BrPLATZ genes were generally conserved in groups with similar motif and exon-intron distribution. The 24 BrPLATZ genes were located in eight of the ten B. rapa chromosomes, with segmental duplication detected in 20 paralogs. Analysis of Ka/Ks ratios revealed that the duplicated genes were under purifying selection. Cis-elements analysis implied that BrPLATZ genes are diverse in functions including tissue-specific, stress and hormone responsive expressions. Furthermore, expression profiling based on RNA-sequencing data revealed that the BrPLATZ genes were expressed in various tissues, with most genes preferentially expressed in flower and silique compared to other tissues. Systematic analysis revealed structural and functional diversity among BrPLATZ proteins, which indicated the possibility of diverse functions of BrPLATZ genes in development and stress resistance. The characterization of PLATZ gene family members may aid in the selection of appropriate candidate genes responsible for biological functions in B. rapa and relevant species.

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Clubroot, caused by the obligate biotrophic protist Plasmodiophora brassicae is a devastating disease of crucifers that causes substantial economic loss worldwide. The disease is characterized by the formation of galls in the root and hypocotyl of infected plants which restricts host vascular cambium development inhibiting efficient water and nutrient uptake by the plant. The pathogen-driven interference of hormonal homeostasis, particularly of cytokinin, in the root tissue is intricately linked with induction of hypertrophy and cell divisions leading to formation of galls. Levels of cytokinins and cell division generally increase at the onset of the disease which declines at the later stages of gall formation. The genes involved cytokinin biosynthesis such as cytokinin oxidase/dehydrogenases and isopentenyl transferases shows differential expressions during clubroot infection and gall expansion in root tissues. Wider understanding of the roles of cytokinins and associated genes along the development of the disease will be helpful in unravelling plants defense mechanism against clubroot disease.

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Powdery mildew disease caused by an obligatory parasitic fungus Podosphaera xanthii is a serious problem of melon (Cucumis melo L.) production worldwide. Severity of problem is further associated with emergence of new races over the years. In this study a new race of powdery mildew fungus was discovered from Ibaraki, Japan. The race was different from all other existing races of P. xanthii occurring in Japan. Phenotypic and genetic analysis established the new fungus type as a new race, N5. Ten melon lines were infected with a total of eight fungal races including the new N5 race and it was found that all melon lines had different disease reactions against the new race compared to other seven races. Only four melon genotypes were found resistant out of 42 commercial cultivars and lines were tested. Disease reactions of two sets of F₂ populations and one set of backcross population revealed that two separate epistatic gene loci located in two different linkage groups (LG), LG II and LG XII, interact together for the resistant or susceptible reaction of melon lines. A total of six simple sequence repeat (SSR) markers were found polymorphic in melon lines out of 16 tested in response to N5 race. Two different sets of F₂ populations between resistant and susceptible melon lines were assessed with two polymorphic SSR markers located in two different groups, LG II and LG XII. SSR genotyping yielded 78% and 94% expected polymerase chain reaction fragments in favor of resistance or susceptibility of F₂ populations of CM17187×PMR5 and PMR45×PMR5 of melon lines, respectively.

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• A survey of Podosphaera xanthii races in melon-producing regions in Rio Grande do Norte State, Brazil
  Anânkia de Oliveira Ricarte Marinho, Adriano Ferreira Martins, Francisco Linco de Souza Tomaz, Elaíne Welk Lopes Pereira Nunes, Denilson Eduardo Silva Dantas, Geovanna Alicia Dantas Gomes, Edicleide Macedo da Silva, Glauber Henrique de Sousa Nunes
  Journal of Plant Pathology.2025; 108(1): 777.     CrossRef
• Status, Gaps and Perspectives of Powdery Mildew Resistance Research and Breeding in Cucurbits
  Aleš Lebeda, Eva Křístková, Barbora Mieslerová, Narinder P. S. Dhillon, James D. McCreight
  Critical Reviews in Plant Sciences.2024; 43(4): 211.     CrossRef
• Identification of powdery mildew resistance quantitative trait loci in melon and development of resistant near-isogenic lines through marker-assisted backcrossing
  Chun-San Wang, Ssu-Yu Lin, Jin-Hsing Huang, Hsin-Yi Chang, Di-Kuan Lew, Yu-Hua Wang, Kae-Kang Hwu, Yung-Fen Huang
  Botanical Studies.2024;[Epub]     CrossRef
• Identification of Gene Responsible for Conferring Resistance against Race KN2 of Podosphaera xanthii in Melon
  Sopheak Kheng, San-Ha Choe, Nihar Sahu, Jong-In Park, Hoy-Taek Kim
  International Journal of Molecular Sciences.2024; 25(2): 1134.     CrossRef
• Fine mapping and identification of candidate genes associated with powdery mildew resistance in melon (Cucumis melo L.)
  Xiaoyu Duan, Yue Yuan, Núria Real, Mi Tang, Jian Ren, Jiaqi Wei, Bin Liu, Xuejun Zhang
  Horticulture Research.2024;[Epub]     CrossRef
• Inheritance of Resistance to Race 5 of Powdery Mildew Fungus Podosphaera xanthii in Melon and Development of Race 5-Specific High Resolution Melting Markers
  Jeong-Eui Hong, Mohammad Rashed Hossain, Hee-Jeong Jung, Ill-Sup Nou
  Plant Breeding and Biotechnology.2022; 10(4): 272.     CrossRef
• Development of powdery mildew race 5-specific SNP markers in Cucumis melo L. using whole-genome resequencing
  Jewel Howlader, Yeji Hong, Sathishkumar Natarajan, Kanij Rukshana Sumi, Hoy-Taek Kim, Jong-In Park, Ill-Sup Nou
  Horticulture, Environment, and Biotechnology.2020; 61(2): 347.     CrossRef
• Genetic Mapping and Nucleotide Diversity of Two Powdery Mildew Resistance Loci in Melon (Cucumis melo)
  Cui Haonan, Ding Zhuo, Fan Chao, Zhu Zicheng, Zhang Hao, Gao Peng, Luan Feishi
  Phytopathology®.2020; 110(12): 1970.     CrossRef
• PCR-Based InDel Marker Associated with Powdery Mildew-Resistant MR-1
  Yu-Ri Choi, Jae Yong Lee, Seongbin Hwang, Hyun Uk Kim
  Agronomy.2020; 10(9): 1274.     CrossRef
• Identification of Two New Races of Podosphaera xanthii Causing Powdery Mildew in Melon in South Korea
  Ye-Ji Hong, Mohammad Rashed Hossain, Hoy-Taek Kim, Jong-In Park, Ill-Sup Nou
  The Plant Pathology Journal.2018; 34(3): 182.     CrossRef

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 transcription- polymerase 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.

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• Induction of defense related enzymatic and non-enzymatic antioxidants and their gene expression imparts resistance to muskmelon against Fusarium oxysporum f. sp. melonis infection
  Chahak Jain, Shilpa Gupta, Sat Pal Sharma, Manjeet Kaur Sangha, Navraj Kaur Sarao, Anu Kalia, Shabda Verma
  Journal of Plant Biochemistry and Biotechnology.2025; 34(4): 941.     CrossRef
• Magnaporthe grisea infection modifies expression of anti-oxidant genes in finger millet [Eleusine coracana (L.) Gaertn.]
  Jinu Jacob, Madhu Pusuluri, Balakrishna Domathoti, Indra Kanta Das
  Journal of Plant Pathology.2019; 101(1): 129.     CrossRef

Identification and authentication of parentage are important for effective pear breeding. Within Korean pear cultivars discrepancies are often reported between parents and offspring in skin color of fruits and also in S-genotypes suggesting that reported parentage was often inappropriate. In Korea, the parentage of the most of pear cultivars was never confirmed at the molecular level. Simple sequence repeat (SSR) genotyping and S-genotype analysis are considered effective in identifying parents. In this study, parentage of nine Korean bred cultivars was confirmed using SSR genotyping and S-genotype analysis. A total of 53 SSR markers were used. Six different haplotype-specific endonucleases were used for restriction cleavage of S-genotypes. Most of the Korean bred cultivars had six comparatively shorter S-RNase, S¹, S³, S⁴, S⁵, S⁶, or S⁷ of 450 bp in length whereas the Japanese control cultivars had four other comparatively longer S-RNase. Out of nine pear cultivars only ‘Chuwhangbae’ and ‘Whangkeumbae’ had identical SSR genotypes and S-genotype with previously reported parents. For another cultivar, ‘Sujeonbae’, the parents were the mutants of reported parent, ‘Niitaka’. For four other cultivars, SSR and S-genotypes of offspring matched with only one reported parent ‘Niitaka’ but those of another parent did not match. For the two other pear cultivars ‘Soowhangbae’ and ‘Sooyoung’ none of reported parents were confirmed by SSR genotyping and S-genotype analysis. Historically, the parent ‘Niitaka’ was predominant in the Korean pear breeding programs because of its high yield potential and quality. The methods have been used in this study could be used to identify pear cultivars with diverse S-genotypes to eliminate any existing obscure parent-offspring relations.

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  Korean Journal of Breeding Science.2025; 57(4): 455.     CrossRef
• Construction of a Bin Genetic Map and QTL Mapping of Red Skin in Interspecific Pear Population
  Xiaojie Zhang, Mengyue Tang, Jianying Peng, Hui Ma, Yuxing Zhang
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• Phenotypic assessment of pear varieties in mutual pollination
  Nina Mozhar, E. Egorov, I. Ilina, N. Zaporozhets, E. Yakimenko
  BIO Web of Conferences.2021; 34: 01012.     CrossRef