NDLI: Auxin Flow in Anther Filaments is Critical for Pollen Grain Development through Regulating Pollen Mitosis

Content Provider	Springer Nature Link
Author	Feng, Xiao Li Ni, Wei Min Elge, Stephan Mueller Roeber, Bernd Xu, Zhi Hong Xue, Hong Wei
Copyright Year	2006
Abstract	It was well known that auxin is critical for anther/pollen grain development, however, the clear distribution and detailed effects of auxin during floral development are still unclear. We have shown here that, through analyzing GUS activities of Arabidopsis lines harboring auxin response elements DR5-GUS, auxin was mainly accumulated in the anther during flower stages 10–12. Further studies employing the indoleacetic acid–lysine synthetase (iaaL) coding gene from Pseudomonas syringae subsp. savastanoi under control of the promoter region of Arabidopsis phosphatidylinositol monophosphate 5-kinase 1 gene, which conducts the anther filament-specific expression, showed that block of auxin flow of filaments resulted in shortened filaments and significantly defective pollen grains. Similar phenotype was observed in tobacco plants transformed with the same construct, confirming the effects of auxin flow in filaments on anther development. Detailed studies further revealed that the meiosis process of pollen grain was normal while the mitosis at later stage was significantly defected, indicating the effects of auxin flow in filaments on pollen grain mitosis process. Analysis employing [$^{14}$C]IAA, as well as the observation on the expression of AtPIN1, coding for auxin efflux carrier, demonstrated the presence of polar auxin transport in anther filaments and pollen grains.
Starting Page	215
Ending Page	226
Page Count	12
File Format	PDF
ISSN	01674412
Journal	Plant Molecular Biology
Volume Number	61
Issue Number	1-2
e-ISSN	15735028
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	filaments anther pollen grain auxin mitosis Biochemistry Plant Sciences Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Medicine Agronomy and Crop Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Auxin Flow in Anther Filaments is Critical for Pollen Grain Development through Regulating Pollen Mitosis

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MYB80, a regulator of tapetal and pollen development, is functionally conserved in crops

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Auxin Flow in Anther Filaments is Critical for Pollen Grain Development through Regulating Pollen Mitosis