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PMID: 12197527 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Programmed cell death during embryogenesis in maize.

Annals of botany ·Vol. 90 ·No. 2 ·2002-08-00 ·Pages 287-92

Giuliani C, Consonni G, Gavazzi G, Colombo M, Dolfini S

Abstract

Programmed cell death (PCD) in plants is considered an integral part of development. Evidence of DNA fragmentation, occurring at specific sites and times during embryo formation in maize (Zea mays L.), was obtained using terminal deoxyribonucleotidyl transferase-mediated dUTP-fluorescein nick end labelling (TUNEL) and by genomic DNA ladder detection. During the crucial period of elaboration of the primary shoot and root axis (14-20 d after pollination), TUNEL-positive nuclei are present in the scutellum, coleoptile, root cap and principally in the suspensor. Additional evidence of a form of programmed cell death occurring in these tissues comes from the detection of a DNA ladder. Upon completion of the differentiation process, all embryonic cells are TUNEL-negative, indicating that possible programmed cell death events during maize embryogenesis are confined to structures or organs that do not contribute to the adult plant body.

MeSH Terms
Apoptosis/genetics,physiology Cell Differentiation/genetics,physiology DNA Fragmentation DNA, Plant/analysis In Situ Nick-End Labeling Plant Roots/genetics,growth & development Plant Shoots/genetics,growth & development Seeds/genetics,growth & development Zea mays/cytology,embryology,genetics
Chemicals
DNA, Plant
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Giuliani Concetta
Dipartimento di Genetica e di Biologia dei microrganismi, Università degli Studi di Milano, Italy.
Consonni Gabriella
Gavazzi Giuseppe
Colombo Monica
Dolfini Silvana
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Article Info
Journal
Annals of botany
Abbr.
Ann Bot
ISSN
0305-7364
DOI
10.1093/aob/mcf173
Published
2002-08-00
Pages
287-92
Language
English
Region
England
NLM ID
0372347
PMCID
PMC4240416
Subset
IM
External Links
PubMed source DOI: 10.1093/aob/mcf173 PMC Full Text View journal details
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