Gibberellin-responding and non-responding dwarf mutants in foxtail millet

Jin Gui Chen; Xie Zhou; Yu Zong Zhang

doi:10.1023/A:1006091601256

Gibberellin-responding and non-responding dwarf mutants in foxtail millet

Jin Gui Chen, Xie Zhou, Yu Zong Zhang

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The sensitivity of foxtail millet (Setaria italica Beauv.) dwarf mutants to GA was studied. Seedlings of dwarf mutants, Aininghuang (ANH) and CH84113 were treated with GAs (GA₁, GA₄, GA₉, GA₁₉ and GA₂₀) using the micro-drop method, or by soaking in GA₃ solution. Plants were also sprayed with GA₃ solution at the jointing stage. It was found that ANH was a GA-responding dwarf mutant, whose leaf blade, leaf sheath and internode length increased significantly after GA application, whereas CH84113 was a non-GA-responding dwarf mutant. However, the mesocotyl in etiolated seedlings of both ANH and CH84113 responded to exogenous GA₃ in a similar way. With the help of an enzyme-linked immunosorbent assay, it was found that the endogenous GA₁₊₃ level in leaves was lower in the GA-responding dwarf mutant ANH, but higher in the non-GA-responding dwarf mutant CH84113, compared with levels in normal cultivars.

Original language	English
Pages (from-to)	19-24
Number of pages	6
Journal	Plant Growth Regulation
Volume	26
Issue number	1
DOIs	https://doi.org/10.1023/A:1006091601256
State	Published - 1998
Externally published	Yes

Funding

This work was financially supported by a grant from Natural Science Foundation of Hebei Province, People’s Republic of China. Thanks are due to Dr. Richard M. Napier, Department of Cell Physiology, Horticulture Research International, Wellesbourne, Warwick CV35 9EF, UK, for a critical reading of the text and valuable suggestions.

Keywords

Dwarfism
Foxtail millet (Setaria italica Beauv.)
Gibberellin
Mutant
Sensitivity

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title = "Gibberellin-responding and non-responding dwarf mutants in foxtail millet",

abstract = "The sensitivity of foxtail millet (Setaria italica Beauv.) dwarf mutants to GA was studied. Seedlings of dwarf mutants, Aininghuang (ANH) and CH84113 were treated with GAs (GA1, GA4, GA9, GA19 and GA20) using the micro-drop method, or by soaking in GA3 solution. Plants were also sprayed with GA3 solution at the jointing stage. It was found that ANH was a GA-responding dwarf mutant, whose leaf blade, leaf sheath and internode length increased significantly after GA application, whereas CH84113 was a non-GA-responding dwarf mutant. However, the mesocotyl in etiolated seedlings of both ANH and CH84113 responded to exogenous GA3 in a similar way. With the help of an enzyme-linked immunosorbent assay, it was found that the endogenous GA1+3 level in leaves was lower in the GA-responding dwarf mutant ANH, but higher in the non-GA-responding dwarf mutant CH84113, compared with levels in normal cultivars.",

keywords = "Dwarfism, Foxtail millet (Setaria italica Beauv.), Gibberellin, Mutant, Sensitivity",

author = "Chen, {Jin Gui} and Xie Zhou and Zhang, {Yu Zong}",

year = "1998",

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T1 - Gibberellin-responding and non-responding dwarf mutants in foxtail millet

AU - Chen, Jin Gui

AU - Zhou, Xie

AU - Zhang, Yu Zong

PY - 1998

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N2 - The sensitivity of foxtail millet (Setaria italica Beauv.) dwarf mutants to GA was studied. Seedlings of dwarf mutants, Aininghuang (ANH) and CH84113 were treated with GAs (GA1, GA4, GA9, GA19 and GA20) using the micro-drop method, or by soaking in GA3 solution. Plants were also sprayed with GA3 solution at the jointing stage. It was found that ANH was a GA-responding dwarf mutant, whose leaf blade, leaf sheath and internode length increased significantly after GA application, whereas CH84113 was a non-GA-responding dwarf mutant. However, the mesocotyl in etiolated seedlings of both ANH and CH84113 responded to exogenous GA3 in a similar way. With the help of an enzyme-linked immunosorbent assay, it was found that the endogenous GA1+3 level in leaves was lower in the GA-responding dwarf mutant ANH, but higher in the non-GA-responding dwarf mutant CH84113, compared with levels in normal cultivars.

AB - The sensitivity of foxtail millet (Setaria italica Beauv.) dwarf mutants to GA was studied. Seedlings of dwarf mutants, Aininghuang (ANH) and CH84113 were treated with GAs (GA1, GA4, GA9, GA19 and GA20) using the micro-drop method, or by soaking in GA3 solution. Plants were also sprayed with GA3 solution at the jointing stage. It was found that ANH was a GA-responding dwarf mutant, whose leaf blade, leaf sheath and internode length increased significantly after GA application, whereas CH84113 was a non-GA-responding dwarf mutant. However, the mesocotyl in etiolated seedlings of both ANH and CH84113 responded to exogenous GA3 in a similar way. With the help of an enzyme-linked immunosorbent assay, it was found that the endogenous GA1+3 level in leaves was lower in the GA-responding dwarf mutant ANH, but higher in the non-GA-responding dwarf mutant CH84113, compared with levels in normal cultivars.

KW - Dwarfism

KW - Foxtail millet (Setaria italica Beauv.)

KW - Gibberellin

KW - Mutant

KW - Sensitivity

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JO - Plant Growth Regulation

JF - Plant Growth Regulation

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ER -

Gibberellin-responding and non-responding dwarf mutants in foxtail millet

Abstract

Funding

Keywords

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