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https://www.readbyqxmd.com/read/29352746/the-common-bean-cok-4-and-the-arabidopsis-fer-kinase-domain-share-similar-function-in-plant-growth-and-defense
#1
Rafhael Felipin Azevedo, Maria Celeste Gonçalves Vidigal, Paula Rodrigues Oblessuc, Maeli Melotto
Receptor-like kinases are membrane proteins that can be shared by diverse signaling pathways. Among them, the Arabidopsis thaliana FERONIA (FER) plays a role in the balance between distinct signals to control growth and defense. We have found that COK-4, a putative kinase encoded in the common bean anthracnose resistance locus Co-4 that is transcriptionally regulated during immune response, is highly similar to the kinase domain of FER. To assess whether COK-4 is a functional ortholog of FER, we expressed COK-4 in the wild type Col-0 and the fer-5 mutant of Arabidopsis and evaluated FER-associated traits...
January 20, 2018: Molecular Plant Pathology
https://www.readbyqxmd.com/read/29352479/contrasting-effects-of-specialist-and-generalist-herbivores-on-resistance-evolution-in-invasive-plants
#2
Zhijie Zhang, Xiaoyun Pan, Dana Blumenthal, Mark van Kleunen, Mu Liu, Bo Li
Invasive alien plants are likely to be released from specialist herbivores and at the same time encounter biotic resistance from resident generalist herbivores in their new ranges. The Shifting Defense Hypothesis predicts that this will result in evolution of decreased defense against specialist herbivores and increased defense against generalist herbivores. To test this, we performed a comprehensive meta-analysis of 61 common garden studies that provide data on resistance and/or tolerance for both introduced and native populations of 32 invasive plant species...
January 20, 2018: Ecology
https://www.readbyqxmd.com/read/29351892/identification-and-functional-analysis-of-cassava-della-proteins-in-plant-disease-resistance-against-cassava-bacterial-blight
#3
Xiaolin Li, Wen Liu, Bing Li, Guoyin Liu, Yunxie Wei, Chaozu He, Haitao Shi
Gibberellin (GA) is an essential plant hormone in plant growth and development as well as various stress responses. DELLA proteins are important repressors of GA signal pathway. GA and DELLA have been extensively investigated in several model plants. However, the in vivo roles of GA and DELLA in cassava, one of the most important crops and energy crops in the tropical area, are unknown. In this study, systematic genome-wide analysis identified 4 MeDELLAs in cassava, as evidenced by the evolutionary tree, gene structures and motifs analyses...
December 26, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29351871/systemic-signaling-in-response-to-wounding-and-pathogens
#4
REVIEW
Richard Hilleary, Simon Gilroy
Plants possess systemic signaling networks that allow the perception of local stresses to be translated into plant-wide responses. Although information can be propagated via a variety of molecules such as hormones and RNAs moving within the bulk flow of the phloem or in the transpiration stream, the vasculature also appears to be a major pathway whereby extremely rapid signals move bi-directionally throughout the plant. In these cases, the movement mechanisms are not dependent on redistribution through bulk flow...
January 16, 2018: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/29351017/temperature-dependent-species-interactions-shape-priority-effects-and-the-persistence-of-unequal-competitors
#5
Tess Nahanni Grainger, Adam Ivan Rego, Benjamin Gilbert
The order of species arrival at a site can determine the outcome of competitive interactions when early arrivers alter the environment or deplete shared resources. These priority effects are predicted to be stronger at high temperatures, as higher vital rates caused by warming allow early arrivers to more rapidly impact a shared environment. We tested this prediction using a pair of congeneric aphid species that specialize on milkweed plants. We manipulated temperature and arrival order of the two aphid species and measured aphid population dynamics and milkweed survival and defensive traits...
February 2018: American Naturalist
https://www.readbyqxmd.com/read/29348716/cylindrocarpon-destructans-ilyonectria-radicicola-species-complex-%C3%A2-causative-agent-of-ginseng-root-rot-disease-and%C3%A2-rusty%C3%A2-symptoms
#6
REVIEW
Mohamed El-Agamy Farh, Yeon-Ju Kim, Yu-Jin Kim, Deok-Chun Yang
Cylindrocarpon destructans/Ilyonectria radicicola is thought to cause both rusty symptom and root-rot disease of American and Korean ginseng. Root-rot disease poses a more serious threat to ginseng roots than rusty symptoms, which we argue result from the plant defense response to pathogen attack. Therefore, strains causing rotten root are characterized as more aggressive than strains causing rusty symptoms. In this review, we state 1- the molecular evidence indicating that the root-rot causing strains are genetically distinct considering them as a separate species of Ilyonectria, namely I...
January 2018: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29346432/retraction-virulent-diuraphis-noxia-aphids-over-express-calcium-signaling-proteins-to-overcome-defenses-of-aphid-resistant-wheat-plants
#7
https://www.readbyqxmd.com/read/29345567/proteomic-analysis-of-vernalization-responsive-proteins-in-winter-wheat-jing841
#8
Yalan Feng, Beibei Kong, Jun Zhang, Xianni Chen, Jiale Yuan, Xingwang Tang, Chao Ma
Vernalization is one of the pivotal ways for plants to flower. As one of the major cereal crops, wheat is widely planted in the world. In the present study, we applied two-dimensional gel electrophoresis (2-DE) and matrix-assisted laser desorption/ionization time-of-flight/time-of-flight mass spectrometry (MALDI-TOF/TOF MS) to analyze the changes in protein expression profiles in responding to vernalization in leaves of wheat seedling before (0d) and after (30d) of vernalization. The results indicated that among the 68 differentially expressed proteins that were successfully identified under vernalization, 36 were up-regulated whereas 32 were down-regulated at 0 d, respectively...
January 17, 2018: Protein and Peptide Letters
https://www.readbyqxmd.com/read/29344683/the-root-transcriptome-of-achyranthes-bidentata-and-the-identification-of-the-genes-involved-in-the-replanting-benefit
#9
Yan Hui Yang, Ming Jie Li, Yan Jie Yi, Rui Fang Li, Cheng Dong, Zhong Yi Zhang
The transcriptome profiling in replanting roots revealed that expression pattern changes of key genes promoted important metabolism pathways, antioxidant and pathogen defense systems, adjusted phytohormone signaling and inhibited lignin biosynthesis. The yield of the medicinal plant Achyranthes bidentata could be significantly increased when replanted into a field cultivated previously for the same crop, but the biological basis of this so-called "replanting benefit" is unknown. Here, the RNA-seq technique was used to identify candidate genes responsible for the benefit...
January 17, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29342935/exogenous-melatonin-alleviates-cold-stress-by-promoting-antioxidant-defense-and-redox-homeostasis-in-camellia-sinensis-l
#10
Xin Li, Ji-Peng Wei, Eric R Scott, Jian-Wei Liu, Shuai Guo, Yang Li, Lan Zhang, Wen-Yan Han
The unprecedented early spring frost that appears as a cold stress adversely affects growth and productivity in tea (Camellia sinensis L.); therefore, it is indispensable to develop approaches to improve the cold tolerance of tea. Here, we investigated the effect of pretreatment with exogenous melatonin on the net photosynthetic rate, the maximum photochemical efficiency of PSII, chlorophyll content, lipid peroxidation, reactive oxygen species (ROS) accumulation, antioxidant potential, and redox homeostasis in leaves of tea plants following cold stress...
January 15, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29341868/transcriptional-evidence-for-crosstalk-between-ja-and-et-or-sa-during-root-knot-nematode-invasion-in-tomato
#11
Wenchao Zhao, Xiaoxuan Zhou, Hui Lei, Jingwei Fan, Rui Yang, Zilong Li, Canli Hu, Mengyan Li, Fukuan Zhao, Shaohui Wang
Previous studies have demonstrated that jasmonic acid (JA) reduces root-knot nematode (RKN) infections in tomato plants. RKN invasion is sensed by roots, and root-derived JA signaling activates systemic defense responses, though this is poorly understood. Here, we investigate variations in the RKN-induced transcriptome in scion phloem between two tomato plant grafts: CM/CM (Lycopersicum esculentum Mill. cv. Castlemart) and CM/spr2 (a JA-deficient mutant). A total of 8,716 genes were differentially expressed in the scion phloem of the plants with JA-deficient rootstock...
December 20, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/29340795/the-sesquiterpene-botrydial-from-botrytis-cinerea-induces-phosphatidic-acid-production-in-tomato-cell-suspensions
#12
Juan Martin D'Ambrosio, Gabriela Gonorazky, Daniela J Sueldo, Javier Moraga, Andrés Arruebarrena Di Palma, Lorenzo Lamattina, Isidro González Collado, Ana Maria Laxalt
The phytotoxin botrydial triggers PA production in tomato cell suspensions via PLD and PLC/DGK activation. PLC/DGK-derived PA is partially required for botrydial-induced ROS generation. Phosphatidic acid (PA) is a phospholipid second messenger involved in the induction of plant defense responses. It is generated via two distinct enzymatic pathways, either via phospholipase D (PLD) or by the sequential action of phospholipase C and diacylglycerol kinase (PLC/DGK). Botrydial is a phytotoxic sesquiterpene generated by the necrotrophic fungus Botrytis cinerea that induces diverse plant defense responses, such as the production of reactive oxygen species (ROS)...
January 16, 2018: Planta
https://www.readbyqxmd.com/read/29340758/plants-eavesdrop-on-cues-produced-by-snails-and-induce-costly-defenses-that-affect-insect-herbivores
#13
John L Orrock, Brian M Connolly, Won-Gyu Choi, Peter W Guiden, Sarah J Swanson, Simon Gilroy
Although induced defenses are widespread in plants, the degree to which plants respond to herbivore kairomones (incidental chemicals that herbivores produce independent of herbivory), the costs and benefits of responding to cues of herbivory risk, and the ecological consequences of induced defenses remain unclear. We demonstrate that undamaged tomatoes, Solanum lycopersicum, induce defenses in response to a kairomone (locomotion mucus) of snail herbivores (Helix aspersa). Induced defense had significant costs and benefits for plants: plants exposed to snail mucus or a standard defense elicitor (methyl jasmonate, MeJA) exhibited slower growth, but also experienced less herbivory by an insect herbivore (Spodoptera exigua)...
January 16, 2018: Oecologia
https://www.readbyqxmd.com/read/29339397/hsfa1a-is-essential-for-mi-1-2-mediated-resistance-to-meloidogyne-incognita-and-regulates-wfi1-transcription-and-h2o2-production
#14
Jie Zhou, Xuechen Xu, Jiajian Cao, Lingling Yin, Xiaojian Xia, Kai Shi, Yanhong Zhou, Jingquan Yu
Plants, especially those with resistance (R) genes, generate reactive oxygen species (ROS) in the apoplast in response to pathogen attack; however, how this process is activated remains unknown. Here, we demonstrate that root-knot nematode (RKN, Meloidogyne incognita) infection rapidly induces ROS accumulation and the hypersensitive response (HR) in the roots of tomato plants with the R gene Mi-1.2 but rarely does so in the susceptible or Mi-1.2-silenced resistant genotypes. While RKN induces the expression of numerous class-A heat shock factor (HsfA) genes in resistant tomato, only silencing of HsfA1a gene compromises Mi-1...
January 16, 2018: Plant Physiology
https://www.readbyqxmd.com/read/29339338/the-phytotoxicities-of-decabromodiphenyl-ether-bde-209-to-different-rice-cultivars-oryza-sativa-l
#15
Kelun Li, Jie Chen, Lizhong Zhu
Decabromodiphenyl ether (BDE-209), as a major component of brominated flame retardants, has been detected in the agricultural soil in considerable amount. Given that BDE-209 is toxic, ubiquitous and persistent, BDE-209 might induce toxic effects on rice cultivars planted in contaminated soil. A comparative study was conducted on phytotoxicities and GC-MS based antioxidant-related metabolite levels to investigate the differences of phytotoxicities of BDE-209 to rice cultivars in Yangtze River Delta of China...
January 12, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29338737/transcriptome-profiling-of-whitefly-guts-in-response-to-tomato-yellow-leaf-curl-virus-infection
#16
Liang Geng, Li-Xin Qian, Ruo-Xuan Shao, Yin-Quan Liu, Shu-Sheng Liu, Xiao-Wei Wang
BACKGROUND: Plant viruses in agricultural crops are of great concern worldwide, and over 75% of them are transmitted from infected to healthy plants by insect vectors. Tomato yellow leaf curl virus (TYLCV) is a begomovirus, which is the largest and most economically important group of plant viruses, transmitted by the whitefly Bemisia tabaci. The circulation of TYLCV in the insect involves complex insect-virus interactions, whereas the molecular mechanisms of these interactions remain ambiguous...
January 16, 2018: Virology Journal
https://www.readbyqxmd.com/read/29337864/effects-of-chitosan-pva-and-cu-nanoparticles-on-the-growth-and-antioxidant-capacity-of-tomato-under-saline-stress
#17
Hipólito Hernández-Hernández, Susana González-Morales, Adalberto Benavides-Mendoza, Hortensia Ortega-Ortiz, Gregorio Cadenas-Pliego, Antonio Juárez-Maldonado
Chitosan is a natural polymer, which has been used in agriculture to stimulate crop growth. Furthermore, it has been used for the encapsulation of nanoparticles in order to obtain controlled release. In this work, the effect of chitosan-PVA and Cu nanoparticles (Cu NPs) absorbed on chitosan-PVA on growth, antioxidant capacity, mineral content, and saline stress in tomato plants was evaluated. The results show that treatments with chitosan-PVA increased tomato growth. Furthermore, chitosan-PVA increased the content of chlorophylls a and b, total chlorophylls, carotenoids, and superoxide dismutase...
January 16, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29336256/mushrooms-as-potent-sources-of-new-biofungicides
#18
Jelena Vukojevic, Mirjana Stajic, Jasmina Cilerdzic
BACKGROUND: Microfungi are causal agents of numerous diseases and disorders of agricultural plants, farm mushrooms and animals as well as human, which results are serious global reduction of the food amount, decrease of life quality, the severe life-threatening diseases and enormous economic losses. METHODS: In spite of organism innate ability to combat against pathogens, in invasions of some pathogens, support of additional antimycotic agents to defence system is required...
January 15, 2018: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29335898/the-novel-transcription-factor-trp-interacts-with-zfp5-a-trichome-initiation-related-transcription-factor-and-negatively-regulates-trichome-initiation-through-gibberellic-acid-signaling
#19
Soo Youn Kim, Sujin Hyoung, Won Mi So, Jeong Sheop Shin
The trichome-related protein (TRP) is a novel transcription factor (TF) that negatively regulates trichome initiation-related TFs through gibberellin (GA) signaling. Trichomes, which are outgrowths of leaf epidermal cells, provide the plant with a first line of defense against damage from herbivores and reduce transpiration. The initiation and development of trichomes are regulated by a network of positively or negatively regulating transcription factors (TFs). However, little information is currently available on transcriptional regulation related to trichome formation...
January 16, 2018: Plant Molecular Biology
https://www.readbyqxmd.com/read/29334890/characterization-of-the-late-embryogenesis-abundant-lea-proteins-family-and-their-role-in-drought-stress-tolerance-in-upland-cotton
#20
Richard Odongo Magwanga, Pu Lu, Joy Nyangasi Kirungu, Hejun Lu, Xingxing Wang, Xiaoyan Cai, Zhongli Zhou, Zhenmei Zhang, Haron Salih, Kunbo Wang, Fang Liu
BACKGROUND: Late embryogenesis abundant (LEA) proteins are large groups of hydrophilic proteins with major role in drought and other abiotic stresses tolerance in plants. In-depth study and characterization of LEA protein families have been carried out in other plants, but not in upland cotton. The main aim of this research work was to characterize the late embryogenesis abundant (LEA) protein families and to carry out gene expression analysis to determine their potential role in drought stress tolerance in upland cotton...
January 15, 2018: BMC Genetics
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