scholarly journals A type III ACC synthase, ACS7, is involved in root gravitropism in Arabidopsis thaliana

2013 ◽  
Vol 64 (14) ◽  
pp. 4343-4360 ◽  
Author(s):  
Shih-Jhe Huang ◽  
Chia-Lun Chang ◽  
Po-Hsun Wang ◽  
Min-Chieh Tsai ◽  
Pang-Hung Hsu ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Acc Synthase ◽  
Type Iii ◽  
Root Gravitropism

scholarly journals The Cyclic Nucleotide-Gated Channel CNGC14 Regulates Root Gravitropism in Arabidopsis thaliana

2015 ◽  
Vol 25 (23) ◽  
pp. 3119-3125 ◽  
Author(s):  
Han-Wei Shih ◽  
Cody L. DePew ◽  
Nathan D. Miller ◽  
Gabriele B. Monshausen
Keyword(s):  
Arabidopsis Thaliana ◽  
Cyclic Nucleotide ◽  
Gated Channel ◽  
Root Gravitropism

Abscisic acid is a negative regulator of root gravitropism in Arabidopsis thaliana

2009 ◽  
Vol 378 (4) ◽  
pp. 695-700 ◽  
Author(s):  
Woong Han ◽  
Honglin Rong ◽  
Hanma Zhang ◽  
Myeong-Hyeon Wang
Keyword(s):  
Arabidopsis Thaliana ◽  
Abscisic Acid ◽  
Negative Regulator ◽  
Root Gravitropism

Induction of an ACC synthase cDNA by ozone in light-grown Arabidopsis thaliana leaves

1998 ◽  
Vol 103 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Jorma Vahala ◽  
Carl D. Schlagnhaufer ◽  
Eva J. Pell
Keyword(s):  
Arabidopsis Thaliana ◽  
Acc Synthase

A new Arabidopsis thaliana root gravitropism and chirality mutant

Plant Science ◽  
2000 ◽  
Vol 158 (1-2) ◽  
pp. 77-85 ◽  
Author(s):  
S Ferrari ◽  
S Piconese ◽  
G Tronelli ◽  
F Migliaccio
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Gravitropism

scholarly journals Pseudomonas syringae type III effector AvrRpt2 alters Arabidopsis thaliana auxin physiology

2007 ◽  
Vol 104 (50) ◽  
pp. 20131-20136 ◽  
Author(s):  
Z. Chen ◽  
J. L. Agnew ◽  
J. D. Cohen ◽  
P. He ◽  
L. Shan ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Pseudomonas Syringae ◽  
Type Iii Effector ◽  
Type Iii

scholarly journals XopR, a Type III Effector Secreted by Xanthomonas oryzae pv. oryzae, Suppresses Microbe-Associated Molecular Pattern-Triggered Immunity in Arabidopsis thaliana

2012 ◽  
Vol 25 (4) ◽  
pp. 505-514 ◽  
Author(s):  
Chiharu Akimoto-Tomiyama ◽  
Ayako Furutani ◽  
Seiji Tsuge ◽  
Erica J. Washington ◽  
Yoko Nishizawa ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Fusion Gene ◽  
Inducible Promoter ◽  
Defense Responses ◽  
Xanthomonas Oryzae ◽  
Type Iii ◽  
Bacterial Pathogenicity ◽  
Molecular Pattern ◽  
Basal Defense ◽  
Delayed Growth

Xanthomonas oryzae pv. oryzae is the causal agent of bacterial blight of rice. The XopR protein, secreted into plant cells through the type III secretion apparatus, is widely conserved in xanthomonads and is predicted to play important roles in bacterial pathogenicity. Here, we examined the function of XopR by constructing transgenic Arabidopsis thaliana plants expressing it under control of the dexamethasone (DEX)-inducible promoter. In the transgenic plants treated with DEX, slightly delayed growth and variegation on leaves were observed. Induction of four microbe-associated molecular pattern (MAMP)-specific early-defense genes by a nonpathogenic X. campestris pv. campestris hrcC deletion mutant were strongly suppressed in the XopR-expressing plants. XopR expression also reduced the deposition of callose, an immune response induced by flg22. When transiently expressed in Nicotiana benthamiana, a XopR::Citrine fusion gene product localized to the plasma membrane. The deletion of XopR in X. oryzae pv. oryzae resulted in reduced pathogenicity on host rice plants. Collectively, these results suggest that XopR inhibits basal defense responses in plants rapidly after MAMP recognition.

scholarly journals The HopZ Family of Pseudomonas syringae Type III Effectors Require Myristoylation for Virulence and Avirulence Functions in Arabidopsis thaliana

2008 ◽  
Vol 190 (8) ◽  
pp. 2880-2891 ◽  
Author(s):  
Jennifer D. Lewis ◽  
Wasan Abada ◽  
Wenbo Ma ◽  
David S. Guttman ◽  
Darrell Desveaux
Keyword(s):  
Arabidopsis Thaliana ◽  
Pseudomonas Syringae ◽  
Hypersensitive Response ◽  
Pathogenic Bacteria ◽  
Functional Characterization ◽  
Defense Responses ◽  
Effector Proteins ◽  
Type Iii Effectors ◽  
Type Iii ◽  
Virulence Protein

ABSTRACT Pseudomonas syringae utilizes the type III secretion system to translocate effector proteins into plant cells, where they can contribute to the pathogen's ability to infect and cause disease. Recognition of these effectors by resistance proteins induces defense responses that typically include a programmed cell death reaction called the hypersensitive response. The YopJ/HopZ family of type III effector proteins is a common family of effector proteins found in animal- and plant-pathogenic bacteria. The HopZ family in P. syringae includes HopZ1aPsyA2, HopZ1bPgyUnB647, HopZ1cPmaE54326, HopZ2Ppi895A and HopZ3PsyB728a. HopZ1a is predicted to be most similar to the ancestral hopZ allele and causes a hypersensitive response in multiple plant species, including Arabidopsis thaliana. Therefore, it has been proposed that host defense responses have driven the diversification of this effector family. In this study, we further characterized the hypersensitive response induced by HopZ1a and demonstrated that it is not dependent on known resistance genes. Further, we identified a novel virulence function for HopZ2 that requires the catalytic cysteine demonstrated to be required for protease activity. Sequence analysis of the HopZ family revealed the presence of a predicted myristoylation sequence in all members except HopZ3. We demonstrated that the myristoylation site is required for membrane localization of this effector family and contributes to the virulence and avirulence activities of HopZ2 and HopZ1a, respectively. This paper provides insight into the selective pressures driving virulence protein evolution by describing a detailed functional characterization of the diverse HopZ family of type III effectors with the model plant Arabidopsis.

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