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| DOI: | 10.1016/j.envexpbot.2016.09.004 |
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| Web URL(s): | http://www.sciencedirect.com/science/article/pii/S0098847216301897
Last checked: 12/08/2016
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Liu, Sha;
Vargas, Joseph;
Merewitz, Emily |
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| Author Affiliation: | Department of Plant Soil and Microbial Sciences, Michigan State University, East Lansing, MI |
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| Title: | Phytohormones associated with bacterial etiolation disease in creeping bentgrass |
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| Source: | Environmental and Experimental Botany. Vol. 133, January 2017, p. 35-49. |
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| Publishing Information: | Elsevier |
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| # of Pages: | 15 |
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| Keywords: | TIC Keywords: Acidovorax avenae; Agrostis stolonifera; Bacterial diseases; Heat stress; Plant growth regulators; Pseudomonas aureofaciens
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| Cultivar Names: | Penn A-4; Tyee |
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| Abstract/Contents: | "Acidovorax avenae subsp. avenae (Aaa) is a pathogen that can cause bacterial etiolation of creeping bentgrass (Agrostis stolonifera). In vitro and in vivo studies of this pathosystem for phytohormone analysis were performed. Aaa and a non-pathogenic, negative control Pseudomonas aureofaciens (Pa) were cultured at room temperature (20-22 °C) for 14 days. For in vivo studies, Aaa infected and uninfected creeping bentgrass 'Tyee' and 'Penn-A4' were grown in hydroponics under optimal 23/20 °C day/night temperatures and heat stress 35/30 °C conditions in growth chambers. Bacterial culture or plant samples were taken for analysis of phytohormones: gibberellic acid isoforms (GA1, GA3, GA4, and GA20), jasmonic acid (JA), salicylic acid (SA), indole-3-acetic acid (IAA), zeatin riboside (ZR), and abscisic acid (ABA). GA1, GA3, GA4 and IAA were detected in some Aaa cultures but not in Pa. 'Penn-A4' was more Aaa sensitive under high temperature than 'Tyee'. 'Tyee' infected with Aaa at high temperatures showed higher JA content in all plant tissues, higher SA in stolons and roots, and less GA3 and GA20 in leaf and stolon tissues than 'Penn-A4' in the same conditions. Differential GA isoform accumulation produced by Aaa could contribute to disease severity and JA and SA accumulation may contribute to disease tolerance." |
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| Language: | English |
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| References: | 62 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Liu, S., J. Vargas, and E. Merewitz. 2017. Phytohormones associated with bacterial etiolation disease in creeping bentgrass. Environ. Exp. Bot. 133:p. 35-49. |
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| DOI: 10.1016/j.envexpbot.2016.09.004 |
| Web URL(s):
http://www.sciencedirect.com/science/article/pii/S0098847216301897
Last checked: 12/08/2016
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: b4885055 |
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