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Mar 29
A Novel Role of Salt- and Drought-Induced RING 1 Protein in Modulating Plant Defense Against Hemibiotrophic and Necrotrophic Pathogens

​Many plant-encoded E3 ligases are known to be involved in plant defense. Ramu et al. report a novel role of E3 ligase SALT- AND DROUGHT-INDUCED RING FINGER1 (SDIR1) in plant immunity. Their research suggests that SDIR1 is a susceptibility factor and its activation or overexpression enhances disease caused by P. syringae pv. tomato DC3000 in Arabidopsis. 


Mar 04
Distinct Transcriptomic Reprogramming in the Wheat Stripe Rust Fungus During the Initial Infection of Wheat and Barberry

​Puccinia striiformis f. sp. tritici is the causal agent of wheat stripe rust that causes severe yield losses all over the world. Zhao et al. represent the first analysis of the P. striiformis f. sp. tritici transcriptome in barberry and contribute to a better understanding of the evolutionary processes and strategies of different types of rust spores during the infection process on different hosts.​


Jan 29
Tobacco Necrosis Virus-AC Single Coat Protein Amino Acid Substitutions Determine Host-Specific Systemic Infections of Nicotiana benthamiana and Soybean

Zongyu Gao and colleagues use alanine scanning of the Tobacco necrosis virus-A coat protein to identify 3 amino acid residues that differentially affect movement of the virus through the plant in tobacco and soybean, as well as identifying host specific interactions of the HSP70 protein Hsc70-2 with the coat protein to mediate systemic infection.

Dec 14
Sec-Delivered Effector 1 (SDE1) of ‘Candidatus Liberibacter asiaticus’ Promotes Citrus Huanglongbing

Clark and colleagues investigate the role of the Liberibacter effector SDE1, finding that it promotes colonization by Liberibacter, the causative agent of citrus greening disease, or huanglongbing, likely by inducing premature senescence responses in leaves.


Nov 12
Extensive Genetic Variation at the Sr22 Wheat Stem Rust Resistance Gene Locus in the Grasses Revealed Through Evolutionary Genomics and Functional Analyses
Wheat stem rust, a previously well-controlled disease, has reemerged as a major threat to wheat, with major outbreaks in Africa, Europe, and central Asia. The stem rust resistance gene Sr22 encodes a nucleotide-binding and leucine-rich repeat receptor, which confers resistance to the highly virulent African stem rust isolate, Ug99. Hatta et al. show that the Sr22 gene is conserved among grasses in the Triticeae and Poeae lineages.​


Oct 11
Bacillus pumilus LZP02 Promotes Rice Root Growth by Improving Carbohydrate Metabolism and Phenylpropanoid Biosynthesis

​Liu et al. explored the mechanism by which Bacillus pumilus LZP02 promotes growth in rice roots through proteomic, transcriptomic, and metabolomic techniques. The results indicated ​that B. pumilus LZP02 promoted the growth of rice roots by enhancing carbohydrate metabolism and phenylpropanoid biosynthesis.

Sep 22
Structural Requirements of the Phytoplasma Effector Protein SAP54 for Causing Homeotic Transformation of Floral Organs

Phytoplasmas are intracellular bacterial plant pathogens that cause devastating diseases in crops and ornamental plants through the secretion of effector proteins. One of these effector proteins, termed SAP54, leads to the degradation of a specific subset of floral homeotic proteins of the MIKC-type MADS-domain family via the ubiquitin-proteasome pathway. Aurin et al. report that, based on biophysical and molecular biological analyses, SAP54 folds into an alpha-helical structure.


Aug 25
Dual Role of Auxin in Regulating Plant Defense and Bacterial Virulence Gene Expression During Pseudomonas syringae PtoDC3000 Pathogenesis

Djami-Tchatchou et al. find that auxin accumulation during infection by Pseudomonas syringae PtoDC3000 alters the interaction between plant and microbe, inhibiting Salicylic acid production in the plant, thus reducing defenses, and modulating bacterial gene expression, promoting a transition from genes needed in early infection to those required during mid-infection.

Jul 07
The Phytophthora infestans AVR2 Effector Escapes R2 Recognition Through Effector Disordering

Yang et al. explored the role of intrinsic disorder in the development of the pathogenicity in the RXLR AVR2 effector of Phytophthora infestans. Their results support the notion that intrinsic disorder is important for the effector function of pathogens and demonstrate that SLiM-mediated protein-protein interaction in the C-terminal effector domain might contribute greatly to the evasion of resistance-protein detection in P. infestans.


Jun 07
RNA Sequencing-Associated Study Identifies GmDRR1 as Positively Regulating the Establishment of Symbiosis in Soybean

In soybean-rhizobium interactions, the type III secretion system (T3SS) of rhizobium plays a key role in regulating host specificity. However, the lack of information on the role of T3SS in signaling networks limits our understanding of symbiosis. Zhang et al. conducted an RNA sequencing analysis of soybean chromosome segment substituted lines, one female parent and two derived lines with different chromosome-substituted segments of wild soybean and opposite nodulation patterns. 


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