keyword
https://read.qxmd.com/read/38531119/the-garp-family-transcription-factor-mthho3-negatively-regulates-salt-tolerance-in-medicago-truncatula
#1
JOURNAL ARTICLE
Xue Wang, Chunxue Wei, Hongmei Huang, Junmei Kang, Ruicai Long, Lin Chen, Mingna Li, Qingchuan Yang
High salinity is one of the detrimental environmental factors restricting plant growth and crop production throughout the world. This study demonstrated that the GARP family transcription factor MtHHO3 is involved in response to salt stress and abscisic acid (ABA) signaling in Medicago truncatula. The transcription of MtHHO3 was repressed by salt, osmotic stress, and ABA treatment. The seed germination assay showed that, overexpression of MtHHO3 in Arabidopsis thaliana caused hypersensitivity to salt and osmotic stress, but increased resistance to ABA inhibition...
March 21, 2024: Plant Physiology and Biochemistry: PPB
https://read.qxmd.com/read/38507780/co-inoculation-with-novel-nodule-inhabiting-bacteria-reduces-the-benefits-of-legume-rhizobium-symbiosis
#2
JOURNAL ARTICLE
James C Kosmopoulos, Rebecca Doyle, Katy D Heath
The ecologically and economically vital symbiosis between nitrogen-fixing rhizobia and leguminous plants is often thought of as a bi-partite interaction, yet studies increasingly show the prevalence of non-rhizobial endophytes (NREs) that occupy nodules alongside rhizobia. Yet, what impact these NREs have on plant or rhizobium fitness remains unclear. Here, we investigated four NRE strains found to naturally co-occupy nodules of the legume Medicago truncatula alongside Sinorhizobium meliloti in native soils...
March 20, 2024: Canadian Journal of Microbiology
https://read.qxmd.com/read/38504900/mutating-alfalfa-coumarate-3-hydroxylase-using-multiplex-crispr-cas9-leads-to-reduced-lignin-deposition-and-improved-forage-quality
#3
JOURNAL ARTICLE
Tezera W Wolabu, Kashif Mahmood, Fang Chen, Ivone Torres-Jerez, Michael Udvardi, Million Tadege, Lili Cong, Zengyu Wang, Jiangqi Wen
Alfalfa ( Medicago sativa L.) forage quality is adversely affected by lignin deposition in cell walls at advanced maturity stages. Reducing lignin content through RNA interference or antisense approaches has been shown to improve alfalfa forage quality and digestibility. We employed a multiplex CRISPR/Cas9-mediated gene-editing system to reduce lignin content and alter lignin composition in alfalfa by targeting the COUMARATE 3-HYDROXYLASE (MsC3H) gene, which encodes a key enzyme in lignin biosynthesis. Four guide RNAs (gRNAs) targeting the first exon of MsC3H were designed and clustered into a tRNA-gRNA polycistronic system and introduced into tetraploid alfalfa via Agrobacterium -mediated transformation...
2024: Frontiers in Plant Science
https://read.qxmd.com/read/38502062/kinase-inducible-domain-interacting-8-regulates-helical-pod-morphology-in-medicago-truncatula
#4
JOURNAL ARTICLE
Qianxia Yu, Huan Du, Yuanyuan Huang, Xiao Lei, Xueting Wu, Jiayu Jiang, Wei Huang, Liangfa Ge
Leguminosae exhibits a wide diversity of legume forms with varying degrees of spiral morphologies, serving as an ideal clade for studying the growth and development of spiral organs. While soybean (Glycine max) develops straight pods, the pod of the model legume Medicago truncatula is a helix structure. Despite the fascinating structures and intensive description of the pods in legumes, little is known regarding the genetic mechanism underlying the highly varied spirality of the legume pods. In this study, we found that KINASE-INDUCIBLE DOMAIN INTERACTING 8 (MtKIX8) plays a key role in regulating the pod structure and spirality in M...
March 19, 2024: Plant Physiology
https://read.qxmd.com/read/38499974/first-report-of-fusarium-commune-causing-bulb-rot-on-lily-lilium-brownii-var-viridulum-baker-in-hunan-province-of-china
#5
JOURNAL ARTICLE
Lei Sun, Li Guang Deng, Jin Qin Fan, Wei Xiang, Qi Dong Chen, Qiong He, Ling Hai Wu, Hao Shi Hu, Hao Pan
Lily ( Lilium brownii var. Viridulum Baker ) is a well-known edible plant with large, white and sweet bulb scales that has important medicinal value (Zhou et al. 2021) and is grown mainly in the Hebei, Shanxi and Henan provinces of China. In May 2021, a case of bulb rot was discovered in a 3.33 hm2 plantation in Huaihua, Hunan Province, affecting 20% of the area (27°59'30″N, 110°32'20″E). The disease is most severe during the rainy season in May and June. In the early stage, irregular brown spots appeared on the lily scales, the necrosis was depressed and gradually enlarges, and in the later stage, the scales were scattered from the base of the disc and slough off...
March 18, 2024: Plant Disease
https://read.qxmd.com/read/38498556/allelopathy-and-identification-of-five-allelochemicals-in-the-leaves-of-the-aromatic-medicinal-tree-aegle-marmelos-l-correa
#6
JOURNAL ARTICLE
Seinn Moh Moh, Shunya Tojo, Toshiaki Teruya, Hisashi Kato-Noguchi
Aegle marmelos (L.) Correa is an economically and therapeutically valuable tree. It is cultivated as a fruit plant in southeast Asian countries. In this research, we investigated the allelopathy and possible allelochemicals in the leaves of A. marmelos . Aqueous methanol extracts of A. marmelos exhibited significant inhibitory effects against the growth of Lepidium sativum , Lactuca sativa , Medicago sativa , Echinochloa crusgalli , Lolium multiflorum , and Phleum pratense . Bioassay-directed chromatographic purification of the A...
February 19, 2024: Plants (Basel, Switzerland)
https://read.qxmd.com/read/38498455/chemical-profiling-insecticidal-and-phytotoxic-effect-of-essential-oils-from-leaves-and-inflorescence-of-moroccan-chenopodium-ambrosioides-l
#7
JOURNAL ARTICLE
Ayoub Kasrati, El Hassan Sakar, Ahmed Aljaiyash, Aziz Hirri, Lahcen Tamegart, Imane Abbad, Chaima Alaoui Jamali
Chenopodium ambrosioides (L.) is a medicinal and aromatic plant widely used in the Moroccan traditional medicine for its important pharmacological properties. In order to contribute to the valorization of this plant, the current study aimed at evaluating, for the first time, the variation in the yield, chemical composition, and insecticidal and phytotoxic activities of C. ambrosioides essential oil (CAEO) isolated from leaves and inflorescences. The results obtained showed that the CAEO yields vary significantly according to the distilled plant part, with 0...
February 8, 2024: Plants (Basel, Switzerland)
https://read.qxmd.com/read/38498195/msspl12-is-a-positive-regulator-in-alfalfa-medicago-sativa-l-salt-tolerance
#8
JOURNAL ARTICLE
Shiwen Lin, Jie Yang, Yanrong Liu, Wanjun Zhang
Over expression of MsSPL12 improved alfalfa salt tolerance by reducing Na+  accumulation and increasing antioxidant enzyme activity and regulating down-stream gene expression. Improvement of salt tolerance is one of the major goals in alfalfa breeding. Here, we demonstrated that MsSPL12, an alfalfa transcription factor gene highly expressed in the stem cells, plays a positive role in alfalfa salt tolerance. MsSPL12 is localized in the nucleus and shows transcriptional activity in the presence of its C-terminus...
March 18, 2024: Plant Cell Reports
https://read.qxmd.com/read/38481404/effect-of-intercropping-with-legumes-at-different-rates-on-the-yield-and-soil-physicochemical-properties-of-cyperus-esculentus-l-in-arid-land
#9
JOURNAL ARTICLE
Xin Shen, Yalan Liu, Xiangyi Li, Lei Li
Intercropping has the potential to enhance yields and nutrient availability in resource-limited agricultural systems. However, the effects on crop yield nutrients and soil properties can vary considerably depending on the specific plant combinations and intercropping ratios used. In this study, the advantages and impacts of intercropping C. esculentus with legumes were investigated by measuring their biomass, nutrient content, and soil properties. The experiment included five intercropping treatments: monoculture of C...
2024: Frontiers in Plant Science
https://read.qxmd.com/read/38481026/biological-nitrogen-fixation-maintains-carbon-nitrogen-balance-and-photosynthesis-at-elevated-co-2
#10
JOURNAL ARTICLE
Matthew D Brooks, Ronnia C Szeto
Understanding crop responses to elevated CO2 is necessary to meet increasing agricultural demands. Crops may not achieve maximum potential yields at high CO2 due to photosynthetic downregulation, often associated with nitrogen limitation. Legumes have been proposed to have an advantage at elevated CO2 due to their ability to exchange carbon for nitrogen. Here, the effects of biological nitrogen fixation (BNF) on the physiological and gene expression responses to elevated CO2 were examined at multiple nitrogen levels by comparing alfalfa mutants incapable of nitrogen fixation to wild-type...
March 13, 2024: Plant, Cell & Environment
https://read.qxmd.com/read/38475545/integrated-metabolomic-and-transcriptomic-profiles-provide-insights-into-the-mechanisms-of-anthocyanin-and-carotenoid-biosynthesis-in-petals-of-medicago-sativa-ssp-sativa-and-medicago-sativa-ssp-falcata
#11
JOURNAL ARTICLE
Xiuzheng Huang, Lei Liu, Xiaojing Qiang, Yuanfa Meng, Zhiyong Li, Fan Huang
The petals of Medicago sativa ssp. sativa and M . sativa ssp. falcata are purple and yellow, respectively. Free hybridization between M . sativa ssp. sativa and M . sativa ssp. falcata has created hybrids with various flower colors in nature. Moreover, the flower colors of alfalfa are closely correlated with yield, nutritional quality, stress tolerance and other agronomic characteristics. To elucidate the underlying mechanisms of flower color formation in M . sativa ssp. sativa and M . sativa ssp. falcata , we conducted an integrative analysis of the transcriptome and metabolome of alfalfa with three different petal colors (purple, yellow and cream)...
February 29, 2024: Plants (Basel, Switzerland)
https://read.qxmd.com/read/38475501/functional-characterization-of-the-msfkf1-gene-reveals-its-dual-role-in-regulating-the-flowering-time-and-plant-height-in-medicago-sativa-l
#12
JOURNAL ARTICLE
Xu Jiang, Lili Zhang, Yajing Li, Ruicai Long, Qingchuan Yang, Junmei Kang
Alfalfa ( M. sativa ), a perennial legume forage, is known for its high yield and good quality. As a long-day plant, it is sensitive to changes in the day length, which affects the flowering time and plant growth, and limits alfalfa yield. Photoperiod-mediated delayed flowering in alfalfa helps to extend the vegetative growth period and increase the yield. We isolated a blue-light phytohormone gene from the alfalfa genome that is an ortholog of soybean FKF1 and named it MsFKF1 . Gene expression analyses showed that MsFKF1 responds to blue light and the circadian clock in alfalfa...
February 27, 2024: Plants (Basel, Switzerland)
https://read.qxmd.com/read/38474164/autophagy-and-symbiosis-membranes-er-and-speculations
#13
REVIEW
Maria G Semenova, Alekandra N Petina, Elena E Fedorova
The interaction of plants and soil bacteria rhizobia leads to the formation of root nodule symbiosis. The intracellular form of rhizobia, the symbiosomes, are able to perform the nitrogen fixation by converting atmospheric dinitrogen into ammonia, which is available for plants. The symbiosis involves the resource sharing between two partners, but this exchange does not include equivalence, which can lead to resource scarcity and stress responses of one of the partners. In this review, we analyze the possible involvement of the autophagy pathway in the process of the maintenance of the nitrogen-fixing bacteria intracellular colony and the changes in the endomembrane system of the host cell...
March 2, 2024: International Journal of Molecular Sciences
https://read.qxmd.com/read/38473971/discovering-new-substrates-of-a-udp-glycosyltransferase-with-a-high-throughput-method
#14
JOURNAL ARTICLE
Mary C L Lethe, Dinh Bui, Ming Hu, Xiaoqiang Wang, Rashim Singh, Clement T Y Chan
UDP-glycosyltransferases (UGTs) form a large enzyme family that is found in a wide range of organisms. These enzymes are known for accepting a wide variety of substrates, and they derivatize xenobiotics and metabolites for detoxification. However, most UGT homologs have not been well characterized, and their potential for biomedical and environmental applications is underexplored. In this work, we have used a fluorescent assay for screening substrates of a plant UGT homolog by monitoring the formation of UDP...
February 27, 2024: International Journal of Molecular Sciences
https://read.qxmd.com/read/38472470/serpentine-environment-prevails-over-geographic-distribution-in-shaping-the-genetic-diversity-of-medicago-lupulina-l
#15
JOURNAL ARTICLE
Anesa Ahatović Hajro, Mujo Hasanović, Senad Murtić, Abdurahim Kalajdžić, Naris Pojskić, Adaleta Durmić-Pašić
Edaphic conditions of serpentine soils, naturally rich in heavy metals, act as a strong selection pressure that shapes specific metal-tolerant ecotypes. Medicago lupulina L. (black medick) is not only a widespread plant species that prefers calcareous and dry soil types but also grows at the borders of serpentine formations. It can also be found in waste and disturbed habitats. This is a species with reported phytoremediation potential, however, there is no published data regarding the impact of the environment on the genetic distribution of this species...
March 12, 2024: Molecular Genetics and Genomics: MGG
https://read.qxmd.com/read/38469328/gene-edited-mtsoc1-triple-mutant-medicago-plants-do-not-flower
#16
JOURNAL ARTICLE
Axel Poulet, Min Zhao, Yongyan Peng, FangFei Tham, Mauren Jaudal, Lulu Zhang, Josien C van Wolfswinkel, Joanna Putterill
Optimized flowering time is an important trait that ensures successful plant adaptation and crop productivity. SOC1-like genes encode MADS transcription factors, which are known to play important roles in flowering control in many plants. This includes the best-characterized eudicot model Arabidopsis thaliana (Arabidopsis), where SOC1 promotes flowering and functions as a floral integrator gene integrating signals from different flowering-time regulatory pathways. Medicago truncatula (Medicago) is a temperate reference legume with strong genomic and genetic resources used to study flowering pathways in legumes...
2024: Frontiers in Plant Science
https://read.qxmd.com/read/38467137/overexpression-of-the-alfalfa-medicago-sativa-gene-mskms1-negatively-regulates-seed-germination-in-transgenic-tobacco-nicotiana-tabacum
#17
JOURNAL ARTICLE
Yiqi Wan, Yuman Cao, Zhiqiang Zhang, Bo Han, Maojin Lu, Zijie Zhuo, Xinyi Gao, Peizhi Yang, Yafang Wang
Soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE)-associated proteins are a class of transmembrane proteins involved in intracellular trafficking pathways. However, the functions of many SNARE domain-containing proteins remain unclear. We have previously identified a SNARE-associated gene in alfalfa (Medicago sativa) KILLING ME SLOWLY1 (MsKMS1), which is involved in various abiotic stresses. In this study, we investigated the function of MsKMS1 in the seed germination of transgenic tobacco (Nicotiana tabacum)...
March 12, 2024: Functional Plant Biology: FPB
https://read.qxmd.com/read/38462552/exploring-the-role-of-symbiotic-modifier-peptidases-in-the-legume%C3%A2-%C3%A2-rhizobium-symbiosis
#18
REVIEW
Prithwi Ghosh, Joydeep Chakraborty
Legumes can establish a mutual association with soil-derived nitrogen-fixing bacteria called 'rhizobia' forming lateral root organs called root nodules. Rhizobia inside the root nodules get transformed into 'bacteroids' that can fix atmospheric nitrogen to ammonia for host plants in return for nutrients and shelter. A substantial 200 million tons of nitrogen is fixed annually through biological nitrogen fixation. Consequently, the symbiotic mechanism of nitrogen fixation is utilized worldwide for sustainable agriculture and plays a crucial role in the Earth's ecosystem...
March 11, 2024: Archives of Microbiology
https://read.qxmd.com/read/38459083/the-long-noncoding-rna-lal-contributes-to-salinity-tolerance-by-modulating-lhcb1s-expression-in-medicago-truncatula
#19
JOURNAL ARTICLE
Yang Zhao, Yafei Liu, Feiran Zhang, Zeng-Yu Wang, Kirankumar S Mysore, Jiangqi Wen, Chuanen Zhou
Long non-coding RNAs (lncRNAs) are abundant in plants, however, their regulatory roles remain unclear in most biological processes, such as response in salinity stress which is harm to plant production. Here we show a lncRNA in Medicago truncatula identified from salt-treated Medicago truncatula is important for salinity tolerance. We name the lncRNA LAL, LncRNA ANTISENSE to M. truncatula LIGHT-HARVESTING CHLOROPHYLL A/B BINDING (MtLHCB) genes. LAL is an antisense to four consecutive MtLHCB genes on chromosome 6...
March 8, 2024: Communications Biology
https://read.qxmd.com/read/38455727/effect-of-heterologous-expression-of-ft-gene-from-medicago-truncatula-in-growth-and-flowering-behavior-of-olive-plants
#20
JOURNAL ARTICLE
Consuelo Guerrero, Sergio Cerezo, Isabel Feito, Lucía Rodríguez, Alon Samach, José A Mercado, Fernando Pliego-Alfaro, Elena Palomo-Ríos
Olive ( Olea europaea L. subsp. europaea ) is one of the most important crops of the Mediterranean Basin and temperate areas worldwide. Obtaining new olive varieties adapted to climatic changing conditions and to modern agricultural practices, as well as other traits such as biotic and abiotic stress resistance and increased oil quality, is currently required; however, the long juvenile phase, as in most woody plants, is the bottleneck in olive breeding programs. Overexpression of genes encoding the 'florigen' Flowering Locus T (FT), can cause the loss of the juvenile phase in many perennials including olives...
2024: Frontiers in Plant Science
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