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1. Shedding light on the crosstalk of plant responses under multiple abiotic factors | |||
Bachar Dahro,LI Jihong,shichunmei | |||
Agronomy 05 May 2017 | |||
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Abstract:The combination of drought, cold and salt factors could occur simultaneously in the field causing a huge loss of crop yields. Hence, the conventional breeding programs that focus on an individual abiotic stress is insufficient to enhance crop productivity in the field. Therefore, the investigation of molecular mechanisms that involve in several abiotic factors is considered as promised tool to improve plant tolerance against simultaneous abiotic stresses. Plants primarily evolved sophisticated regulatory mechanisms to adapt different environmental factors. Here, we reviewed that the effects of drought, salt and cold factors share in inducing cellular osmotic stress. In addition, we showed the crosstalk between the molecular mechanisms that are involved under different abiotic stresses. Overall, we conclude that understanding the physiological responses of plants under simultaneous environmental cues is prerequisite for genetic crop improvement. | |||
TO cite this article:Bachar Dahro,LI Jihong,shichunmei. Shedding light on the crosstalk of plant responses under multiple abiotic factors[OL].[ 5 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4732957 |
2. Genome-wide identification and expression analysis of the polyamine biosynthesis gene in sweet orange (Citrus sinensis) | |||
WuHao,Liu Jihong | |||
Agronomy 28 April 2017 | |||
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Abstract:Polyamines (PAs) are low molecular weight, aliphatic polycations found in the cells of all living organisms. And in plants, a growing number of evidences support that PAs play important roles in abiotic stresses. In this study, a total of 18 polyamine biosynthesis genes which belong to 10 kinds of different polyamine biosynthesis enzymes were isolated from the entire citrus genome and a further analysis including the chromosomal locations, phylogenetic relationships, functional annotations, promoter analysis, and gene structures were performed. Tissue specific expression of these genes was detected in root, stem, leaf, pulp, peel, and callus. The polyamine biosynthesis gene displayed various responses to exogenous polyamines (putrescine, spermidine, spermine) and ABA treatments, and were differentially altered by abiotic stresses, including cold and salt. And the change patterns of three main polyamines during cold stress in leaves and callus were characterized. The comprehensive analysis of polyamine biosynthesis gene is helpful to exploit strategies to improve plant tolerance to multiple environmental stresses. | |||
TO cite this article:WuHao,Liu Jihong. Genome-wide identification and expression analysis of the polyamine biosynthesis gene in sweet orange (Citrus sinensis)[OL].[28 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4730680 |
3. Volatile profiling of two local pears with rich aroma for white pear aroma improvement breeding | |||
YI Xingkai,LIU Guofeng,WEI Shu | |||
Agronomy 28 May 2016 | |||
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Abstract:Volatile profiles of two local cultivars with substantial aroma grown in Anhui, China, 'Xiang-Mian Li' (XML) and 'Mu-Tou Su' (MTS), were compared with those of control cultivars 'Dang-Shan Suli' (DSS) (Pyrus bretschneideri) and 'Nan-Guo Li' (NGL) (P. ussuriensis). Volatiles detected from the intact fruits of XML, MTS, NGL and DSS were 11, 14, 7 and 25, respectively; the rank of their total odor active values was NGL>XML>MTS>DSS. Ethyl hexanoate was the most abundant and odor active compound for XML, MTS and NGL. Substantial amounts of alcohols were found in homogenized flesh of XML and MTS. Multivariate analysis identified ethyl hexanoate and diethylene glycol as the most important contributors to the volatile profile variance in intact fruit and pulp. Our data suggested that the aroma of XML was more intense than MTS and it has high potential for Chinese white pear aroma improvement to maintaining its typical characteristics. | |||
TO cite this article:YI Xingkai,LIU Guofeng,WEI Shu. Volatile profiling of two local pears with rich aroma for white pear aroma improvement breeding[OL].[28 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4692153 |
4. Comparative genomic and phylogenetic analysis of anthocyanin biosynthetic genes in Arabidopsis thaliana and Brassica oleracea | |||
REN Jie,LIU Zhiyong,TAN Chong,ZHANG Yun,FENG Hui | |||
Agronomy 20 May 2016 | |||
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Abstract:Background: Anthocyanins are water-soluble natural pigments that are widely distributed in plants. Numerous studies of these flavonoids, which play many important physiological roles, have been performed in the model plant Arabidopsis thaliana. However, no previous studies have focused on anthocyanin biosynthetic pathways in Brassica oleracea. We therefore performed a comparative genomic and phylogenetic analysis of anthocyanin biosynthetic genes in B. oleracea and A. thaliana to explore this pathway in B. oleracea. Results: B. oleracea contains 113 anthocyanin biosynthesis genes, which are orthologs of 62 AtABGs. More than one copy of these genes are present in B. oleracea compared to A. thaliana. Whole genome duplication and tandem duplication have affected these structural and regulatory genes in B. oleracea. More structural genes encode proteins that function upstream of the anthocyanin biosynthetic pathway than downstream. Conclusions: This systematic study of anthocyanin biosynthetic genes in B. oleracea will help elucidate the genetic mechanism of anthocyanin biosynthesis in B. oleracea and perhaps plants in general. The results may also be useful for breeding high-anthocyanin plants. Results: B. oleracea contains 113 anthocyanin biosynthesis genes, which are orthologs of 62 AtABGs. More than one copy of these genes are present in B. oleracea compared to A. thaliana. Whole genome duplication and tandem duplication have affected these structural and regulatory genes in B. oleracea. More structural genes encode proteins that function upstream of the anthocyanin biosynthetic pathway than downstream. Conclusions: This systematic study of anthocyanin biosynthetic genes in B. oleracea will help elucidate the genetic mechanism of anthocyanin biosynthesis in B. oleracea and perhaps plants in general. The results may also be useful for breeding high-anthocyanin plants. | |||
TO cite this article:REN Jie,LIU Zhiyong,TAN Chong, et al. Comparative genomic and phylogenetic analysis of anthocyanin biosynthetic genes in Arabidopsis thaliana and Brassica oleracea[OL].[20 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4688557 |
5. Comparative transcriptome analysis of a female-sterile mutant (fsm) in Chinese cabbage (Brassica campestris ssp. pekinensis) | |||
HUANG Shengnan,LIU Zhiyong,LI Chengyu,YAO Runpeng,LI Danyang,LI Xiang,HOU Li,FENG Hui | |||
Agronomy 16 May 2016 | |||
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Abstract:In this study, we identified the female-sterile mutant fsm in Chinese cabbage. This mutant, which exhibits stable inheritance, was derived from Chinese cabbage DH line 'FT' using a combination of isolated microspore culture and ethyl methanesulfonate (EMS) mutagenesis. Genetic analysis indicated that the phenotype of fsm is controlled by a single recessive nuclear gene. Morphological observations revealed significant differences between the floral organs of fsm and wild-type line 'FT'. Parts of the pistils of fsm are smaller and shorter than those of 'FT', especially the ovary, which may directly cause the female sterility of the mutant. Comparative transcriptome analysis of 'FT' and fsm using RNA-Seq revealed a total of 1,872 differentially expressed genes (DEGs) between 'FT' and fsm. Of these, a number of genes involved in ovule development were identified, such as PRETTY FEW SEEDS 2 (PFS2) and Temperature-Induced Lipocalin (TIL), which were upregulated in fsm vs. 'FT'. In addition, qRT-PCR analysis of the expression patterns of 18 DEGs confirmed the accuracy of the RNA-seq data. These results shed light on the molecular mechanisms underlying pistil development in Chinese cabbage. | |||
TO cite this article:HUANG Shengnan,LIU Zhiyong,LI Chengyu, et al. Comparative transcriptome analysis of a female-sterile mutant (fsm) in Chinese cabbage (Brassica campestris ssp. pekinensis)[OL].[16 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4688563 |
6. Identification of microRNAs related to the genetic male sterility of Chinese cabbage using high-throughput sequencing | |||
LIU Chang,LIU Zhiyong,SUN Ying,LI Chengyu,ZHANG Yun,FENF Hui | |||
Agronomy 13 May 2016 | |||
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Abstract:MicroRNAs (miRNAs) negatively regulate gene expression, and play important roles in growth and development, cell proliferation, apoptosis, signal transduction, and in biotic and abiotic stress responses. In plants, miRNAs also play an important role in pollen development. However, to date, few pollen development-related miRNAs have been identified. In this study we used the fertile and sterile buds of an AB line of Chinese cabbage, 'AB03', as the test material, and constructed small RNA libraries. Using high-throughput sequencing, we screened 19 differentially expressed miRNAs, obtained 46 novel miRNAs and predicted 200 target genes of 30 miRNA families. Quantitative real-time reverse transcription PCR verified that the expressions of all 19 differentially expressed miRNAs were basically consistent with the sequencing results. Our study identified miRNAs that might participate in pollen development and provided the relationship between miRNAs and their target genes, which might form the theoretical basis for future research. | |||
TO cite this article:LIU Chang,LIU Zhiyong,SUN Ying, et al. Identification of microRNAs related to the genetic male sterility of Chinese cabbage using high-throughput sequencing[OL].[13 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4688704 |
7. Molecular cloning and functional characterization of apple MdPIF1 | |||
Li Yuanyuan,Qiao Yu,Mao Ke,Hao Yujin | |||
Agronomy 05 May 2016 | |||
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Abstract:In the angiosperm seed, the decision to germinate is dependent on the interaction of various environmental factors, including temperature and light. Light is sensed and perceived by photoreceptors. Till now, several photoreceptors have been characterized from various plant species. Among them, phytochromes (phys) are the red and far-red light photoreceptors that mediate multiple responses in plant growth and development. Here, we showed that the MdPIF1, a bHLH gene, which encodes a PIF-like protein, was constitutively expressed at different levels in various apple tissues, and was significantly induced during seed germination. Functional complementation assay in Arabidopsis pil5 mutant suggested that MdPIF1 was a negative regulator in the phy-mediated inhibition of hypocotyl elongation, and seed germination was inhibited after MdPIF1 overexpression in the transgenic pil5 mutant lines. In addition, MdPIF1 regulated the germination of apple seeds and dormancy breaking in apple buds based on our study. Moreover, we observed that MdPIF1 inhibited growth via phy-mediated pathways in apple calluses. These findings suggested MdPIF1 acts as an important regulator in phy-mediated plant growth and development. | |||
TO cite this article:Li Yuanyuan,Qiao Yu,Mao Ke, et al. Molecular cloning and functional characterization of apple MdPIF1[OL].[ 5 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4686352 |
8. The effects of ABA on photosynthesis in tomato under sub-high temperature and high light stress | |||
Liu Yufeng,GANG Shuang,LI Tianlai | |||
Agronomy 15 March 2016 | |||
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Abstract:The present study investigated the role of abscisic acid (ABA) application in photosynthesis, photosystems I and II (PSI and PSII), antioxidant system and ABA-related genes expression under sub-high temperature and high light (STHL) stress. STHL treatment led to an irreversible reduction in the photosynthetic rate (Pn),damaged PSII firstly at three hours , and then inhibited RuBPCase activity at seven hours, at last injured PSI after eleven hours. During 11 hours STHL stress, exogenous ABA can alleviate the degree of Pn decreasing, improve the activity of RuBPCase, protect PSII to photoinhibition, and promote the ability of reactive oxygen removal .When severe stress occured, exogenous ABA has certain effect, but can not ease photoinhibition and photodamage. In addition, exogenous ABA effected significantly on genes of upstream regulatory ABA biosynthesis key enzymes and downstream response MYB transcription factors. | |||
TO cite this article:Liu Yufeng,GANG Shuang,LI Tianlai. The effects of ABA on photosynthesis in tomato under sub-high temperature and high light stress[OL].[15 March 2016] http://en.paper.edu.cn/en_releasepaper/content/4681031 |
9. Effects of p-chlorophenoxyisobutyric acid, arabinogalactan, and activated charcoal on microspore embryogenesis in kale | |||
Niu Ruiqing,Zhang Yun,Ren Jie,Tong Yan,Liu Zhiyong,Wang Yushu,Feng Hui | |||
Agronomy 03 June 2015 | |||
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Abstract:To improve embryogenesis in microspore cultures of kale (Brassica oleracea L. var. acephala DC.), 6-benzylaminopurine (6-BA), naphthaleneacetic acid (NAA), arabinogalactan (AG), p-chlorophenoxyisobutyric acid (PCIB), and activated charcoal (AC) were added to the medium using four varieties of kale. The results showed that the addition of AG (0.1-0.2 g/L), AC (0.1-0.2 g/L) or a combination of 6-BA (0.1-0.2 mg/L) and NAA (0.1-0.2 mg/L) promoted embryogenesis. Adding 40 μM PCIB or a combination of 40 μM PCIB and 0.2 g/L AC to NLN-13 medium at pH 5.8 effectively enhanced embryogenesis. Treatment with a combination of 40 μM PCIB and 10 mg/L AG gave the highest rate of embryonic induction, especially in genotype "Y007," which showed a twelve-fold increase in yield. | |||
TO cite this article:Niu Ruiqing,Zhang Yun,Ren Jie, et al. Effects of p-chlorophenoxyisobutyric acid, arabinogalactan, and activated charcoal on microspore embryogenesis in kale[OL].[ 3 June 2015] http://en.paper.edu.cn/en_releasepaper/content/4646235 |
10. Mapping of Re, a gene conferring the red leaf trait in ornamental kale (Brassica oleracea L. var. acephala) | |||
Ren Jie,Liu Zhiyong,Niu Ruiqing,Feng Hui | |||
Agronomy 25 May 2015 | |||
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Abstract:Variegated leaf color is an important agronomic trait that affects the market value of ornamental kale (Brassica oleracea L. var. acephala). The red leaf phenotype in kale is due to anthocyanin accumulation. To investigate the pattern of inheritance of this trait, we constructed an F2 population by crossing 'Y005-15', a double haploid with red leaves, with a white-leaved double haploid, 'Y011-13-38', followed by self-pollination. An F2 population consisting of 753 individuals was used to study the inheritance of this trait, which showed that the character was controlled by a dominate gene. All of the 185 white leaf trait plants in the F2 were used for mapping and developing markers linked to Re gene. Results showed that Re was mapped to a locus on linkage group C09 of Brassica oleracea, and the locus was mapped between three SSR markers (C9Z1, C9Z16-1 and C9Z96 ), with a genetic distance of 6.7, 1.0 and 2.1 cM from Re gene, respectively. Two codominant markers, namely, C9Z1 and C9Z96, are located on the same side of the gene while C9Z16-1 is on the other side. These results may facilitate marker-assisted selection of the red leaf trait in kale breeding as well as map-based cloning of the red leaf trait gene. | |||
TO cite this article:Ren Jie,Liu Zhiyong,Niu Ruiqing, et al. Mapping of Re, a gene conferring the red leaf trait in ornamental kale (Brassica oleracea L. var. acephala)[OL].[25 May 2015] http://en.paper.edu.cn/en_releasepaper/content/4644219 |
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