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Burkholderia phytofirmans-induced shoot and root growth promotion is associated with endogenous changes in plant growth hormone levels
Plant growth promoting bacteria (PGPB) are capable of significantly altering the growth phenotype of inoculated plants. Changes in growth phenotype are often attributed to the ability of PGPB to assimilate minerals and/or increase mineral uptake, leading to increased plant root growth. However, many...
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Published in: | Plant growth regulation 2015-01, Vol.75 (1), p.199-207 |
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description | Plant growth promoting bacteria (PGPB) are capable of significantly altering the growth phenotype of inoculated plants. Changes in growth phenotype are often attributed to the ability of PGPB to assimilate minerals and/or increase mineral uptake, leading to increased plant root growth. However, many PGPB are also capable of either synthesizing plant hormones, such as auxins (mainly indole-3-acetic acid or IAA), gibberellins (GAs) and cytokinins (CKs) or affecting plant hormone biosynthesis (homeostasis) in planta. Burkholderia phytofirmans strain PsJN is a PGPB capable of inducing biomass growth of several plant species, including potatoes (Solanum tuberosum L.). In this paper we examined the effect of PsJN inoculation of two potato cultivars with similar root growth, but different shoot growth patterns (faster-growing Kennebec and slower-growing Yukon gold) to asses the bacteria’s impact on growth and plant hormone homeostasis. Both cultivars showed similar and massive root growth increases after inoculation and this was associated with a twofold to threefold increase in IAA and CK (trans-zeatin or tZ) levels, expressed on a per plant basis. However, PsJN inoculation resulted in a different shoot growth response, which appeared to depend on the inherent growth characteristics of each cultivar. That is, the slower-growing Yukon gold plants matched the growth rate of faster-growing Kennebec plants 20 days after inoculation and this was associated with higher GA₁levels and lower tZ levels. It is thus concluded that B. phytofirmans strain PsJN-induced plant phenotypic changes are associated with, and likely dependent on, changes in biosynthesis of plant growth hormones. |
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Both cultivars showed similar and massive root growth increases after inoculation and this was associated with a twofold to threefold increase in IAA and CK (trans-zeatin or tZ) levels, expressed on a per plant basis. However, PsJN inoculation resulted in a different shoot growth response, which appeared to depend on the inherent growth characteristics of each cultivar. That is, the slower-growing Yukon gold plants matched the growth rate of faster-growing Kennebec plants 20 days after inoculation and this was associated with higher GA₁levels and lower tZ levels. 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Changes in growth phenotype are often attributed to the ability of PGPB to assimilate minerals and/or increase mineral uptake, leading to increased plant root growth. However, many PGPB are also capable of either synthesizing plant hormones, such as auxins (mainly indole-3-acetic acid or IAA), gibberellins (GAs) and cytokinins (CKs) or affecting plant hormone biosynthesis (homeostasis) in planta. Burkholderia phytofirmans strain PsJN is a PGPB capable of inducing biomass growth of several plant species, including potatoes (Solanum tuberosum L.). In this paper we examined the effect of PsJN inoculation of two potato cultivars with similar root growth, but different shoot growth patterns (faster-growing Kennebec and slower-growing Yukon gold) to asses the bacteria’s impact on growth and plant hormone homeostasis. Both cultivars showed similar and massive root growth increases after inoculation and this was associated with a twofold to threefold increase in IAA and CK (trans-zeatin or tZ) levels, expressed on a per plant basis. However, PsJN inoculation resulted in a different shoot growth response, which appeared to depend on the inherent growth characteristics of each cultivar. That is, the slower-growing Yukon gold plants matched the growth rate of faster-growing Kennebec plants 20 days after inoculation and this was associated with higher GA₁levels and lower tZ levels. It is thus concluded that B. phytofirmans strain PsJN-induced plant phenotypic changes are associated with, and likely dependent on, changes in biosynthesis of plant growth hormones.</description><subject>Acetic acid</subject><subject>Agriculture</subject><subject>biomass</subject><subject>Biomedical and Life Sciences</subject><subject>Biosynthesis</subject><subject>Burkholderia</subject><subject>Burkholderia phytofirmans</subject><subject>Cultivars</subject><subject>cytokinins</subject><subject>gibberellins</subject><subject>Gold</subject><subject>growth promotion</subject><subject>homeostasis</subject><subject>Hormones</subject><subject>indole acetic acid</subject><subject>Life Sciences</subject><subject>minerals</subject><subject>Original Paper</subject><subject>phenotype</subject><subject>Plant Anatomy/Development</subject><subject>Plant growth</subject><subject>plant growth-promoting rhizobacteria</subject><subject>Plant Physiology</subject><subject>Plant Sciences</subject><subject>Plant species</subject><subject>Potatoes</subject><subject>root growth</subject><subject>shoots</subject><subject>Solanum tuberosum</subject><issn>0167-6903</issn><issn>1573-5087</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp9kU1rFTEUhgex4LX1B7gy4MZN9OR7stRSP6Dgou065GaSO6kzyTWZsfQP-LvNZUTEhascyPMcXs7bdS8JvCUA6l0loKjAQDjWmnMsn3Q7IhTDAnr1tNsBkQpLDexZ97zWewDoe0F23c8Pa_k25mnwJVp0HB-XHGKZbao4pmF1fkB1zHlBNg2onIZDyQ_LiI4lz3mJOaFYka01u2iXRj_E9unTkA8-5bUiN9p08BXFhI6TTX_8MZc5J48m_8NP9aI7C3aq_sXv97y7-3h1e_kZX3_99OXy_TV2nLMF88DUXmjdAwMYdBiGwAcixF56GZxSVvhAieipYDxIponmrp3F6b0VQB1l592bbW-L_331dTFzrM5PLZlvaQ2RgktFiewb-vof9D6vJbV0jeKUMN1z0SiyUa7kWosP5ljibMujIWBOzZitGdOaMadmjGwO3Zza2Hac8tfm_0ivNinYbOyhxGrubigQAUB6KVjPfgGl55yI</recordid><startdate>20150101</startdate><enddate>20150101</enddate><creator>Kurepin, Leonid V</creator><creator>Park, Jae Min</creator><creator>Lazarovits, George</creator><creator>Bernards, Mark A</creator><general>Springer-Verlag</general><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7X2</scope><scope>7XB</scope><scope>8FE</scope><scope>8FH</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>LK8</scope><scope>M0K</scope><scope>M2O</scope><scope>M7P</scope><scope>MBDVC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope><scope>7QL</scope><scope>C1K</scope></search><sort><creationdate>20150101</creationdate><title>Burkholderia phytofirmans-induced shoot and root growth promotion is associated with endogenous changes in plant growth hormone levels</title><author>Kurepin, Leonid V ; Park, Jae Min ; Lazarovits, George ; Bernards, Mark A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c443t-4f37b59980300d9fddf4d155b6e6fc77a5ef21582534f639194c725c9ba502c23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Acetic acid</topic><topic>Agriculture</topic><topic>biomass</topic><topic>Biomedical and Life Sciences</topic><topic>Biosynthesis</topic><topic>Burkholderia</topic><topic>Burkholderia phytofirmans</topic><topic>Cultivars</topic><topic>cytokinins</topic><topic>gibberellins</topic><topic>Gold</topic><topic>growth promotion</topic><topic>homeostasis</topic><topic>Hormones</topic><topic>indole acetic acid</topic><topic>Life Sciences</topic><topic>minerals</topic><topic>Original Paper</topic><topic>phenotype</topic><topic>Plant Anatomy/Development</topic><topic>Plant growth</topic><topic>plant growth-promoting rhizobacteria</topic><topic>Plant Physiology</topic><topic>Plant Sciences</topic><topic>Plant species</topic><topic>Potatoes</topic><topic>root growth</topic><topic>shoots</topic><topic>Solanum tuberosum</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kurepin, Leonid V</creatorcontrib><creatorcontrib>Park, Jae Min</creatorcontrib><creatorcontrib>Lazarovits, George</creatorcontrib><creatorcontrib>Bernards, Mark A</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Agricultural Science Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>AUTh Library subscriptions: ProQuest Central</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Biological Science Collection</collection><collection>Agriculture Science Database</collection><collection>ProQuest research library</collection><collection>Biological Science Database</collection><collection>Research Library (Corporate)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Plant growth regulation</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kurepin, Leonid V</au><au>Park, Jae Min</au><au>Lazarovits, George</au><au>Bernards, Mark A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Burkholderia phytofirmans-induced shoot and root growth promotion is associated with endogenous changes in plant growth hormone levels</atitle><jtitle>Plant growth regulation</jtitle><stitle>Plant Growth Regul</stitle><date>2015-01-01</date><risdate>2015</risdate><volume>75</volume><issue>1</issue><spage>199</spage><epage>207</epage><pages>199-207</pages><issn>0167-6903</issn><eissn>1573-5087</eissn><abstract>Plant growth promoting bacteria (PGPB) are capable of significantly altering the growth phenotype of inoculated plants. Changes in growth phenotype are often attributed to the ability of PGPB to assimilate minerals and/or increase mineral uptake, leading to increased plant root growth. However, many PGPB are also capable of either synthesizing plant hormones, such as auxins (mainly indole-3-acetic acid or IAA), gibberellins (GAs) and cytokinins (CKs) or affecting plant hormone biosynthesis (homeostasis) in planta. Burkholderia phytofirmans strain PsJN is a PGPB capable of inducing biomass growth of several plant species, including potatoes (Solanum tuberosum L.). In this paper we examined the effect of PsJN inoculation of two potato cultivars with similar root growth, but different shoot growth patterns (faster-growing Kennebec and slower-growing Yukon gold) to asses the bacteria’s impact on growth and plant hormone homeostasis. Both cultivars showed similar and massive root growth increases after inoculation and this was associated with a twofold to threefold increase in IAA and CK (trans-zeatin or tZ) levels, expressed on a per plant basis. However, PsJN inoculation resulted in a different shoot growth response, which appeared to depend on the inherent growth characteristics of each cultivar. That is, the slower-growing Yukon gold plants matched the growth rate of faster-growing Kennebec plants 20 days after inoculation and this was associated with higher GA₁levels and lower tZ levels. It is thus concluded that B. phytofirmans strain PsJN-induced plant phenotypic changes are associated with, and likely dependent on, changes in biosynthesis of plant growth hormones.</abstract><cop>Dordrecht</cop><pub>Springer-Verlag</pub><doi>10.1007/s10725-014-9944-6</doi><tpages>9</tpages></addata></record> |
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subjects | Acetic acid Agriculture biomass Biomedical and Life Sciences Biosynthesis Burkholderia Burkholderia phytofirmans Cultivars cytokinins gibberellins Gold growth promotion homeostasis Hormones indole acetic acid Life Sciences minerals Original Paper phenotype Plant Anatomy/Development Plant growth plant growth-promoting rhizobacteria Plant Physiology Plant Sciences Plant species Potatoes root growth shoots Solanum tuberosum |
title | Burkholderia phytofirmans-induced shoot and root growth promotion is associated with endogenous changes in plant growth hormone levels |
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