PMID- 29159670
OWN - NLM
STAT- MEDLINE
DCOM- 20181211
LR  - 20220409
IS  - 1573-6849 (Electronic)
IS  - 0967-3849 (Linking)
VI  - 26
IP  - 3
DP  - 2018 Sep
TI  - Analysis of B chromosome nondisjunction induced by the r-X1 deficiency in maize.
PG  - 153-162
LID - 10.1007/s10577-017-9567-7 [doi]
AB  - The maize B chromosome typically undergoes nondisjunction during the second 
      microspore division. For normal A chromosomes, the r-X1 deficiency in maize can 
      induce nondisjunction during the second megaspore and first microspore divisions. 
      However, it is not known whether the r-X1 deficiency also induces nondisjunction 
      of the maize B chromosome during these cell divisions. To answer this question, 
      chromosome numbers were determined in the progeny of r-X1/R-r female parents 
      carrying two B chromosomes. Some of the r-X1-lacking progeny (21.2%) contained 
      zero or two B chromosomes. However, a much higher percentage of the 
      r-X1-containing progeny (43.4%) exhibited zero or two B chromosomes, but none 
      displayed more than two B chromosomes. Thus, the results indicated that the r-X1 
      deficiency could also induce nondisjunction of the B chromosome during the second 
      megaspore division; moreover, the B chromosome in itself could undergo 
      nondisjunction during the same division. In addition, pollen grains from plants 
      with two B chromosomes lacking or exhibiting the r-X1 deficiency were compared 
      via pollen fluorescence in situ hybridization (FISH) using a B 
      chromosome-specific probe. The results revealed that the r-X1 deficiency could 
      induce the occurrence of B chromosome nondisjunction during the first microspore 
      division and that the B chromosome in itself could undergo nondisjunction during 
      the same division at a lower frequency. Our data shed more light on the behavior 
      of the maize B chromosome during cell division.
FAU - Tseng, Shih-Hsuan
AU  - Tseng SH
AD  - Department of Agronomy, National Chung Hsing University, 250 Kuo Kuang Road, 
      Taichung, 402, Taiwan.
FAU - Peng, Shu-Fen
AU  - Peng SF
AD  - Department of Medical Research, China Medical University Hospital, Taichung, 
      Taiwan.
FAU - Cheng, Ya-Ming
AU  - Cheng YM
AUID- ORCID: 0000-0002-3244-1850
AD  - Department of Agronomy, National Chung Hsing University, 250 Kuo Kuang Road, 
      Taichung, 402, Taiwan. ymcheng@dragon.nchu.edu.tw.
LA  - eng
GR  - MOST 104-2311-B-005-012-MY3/Ministry of Science and Technology, 
      Taiwan/International
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20171120
PL  - Netherlands
TA  - Chromosome Res
JT  - Chromosome research : an international journal on the molecular, supramolecular 
      and evolutionary aspects of chromosome biology
JID - 9313452
SB  - IM
MH  - Cell Division/*genetics
MH  - Chromosomes, Plant/*genetics/metabolism
MH  - Zea mays/*genetics/metabolism
OTO - NOTNLM
OT  - B chromosome
OT  - Maize
OT  - Nondisjunction
OT  - Pollen FISH
OT  - r-X1 deficiency
EDAT- 2017/11/22 06:00
MHDA- 2018/12/12 06:00
CRDT- 2017/11/22 06:00
PHST- 2017/09/20 00:00 [received]
PHST- 2017/11/08 00:00 [accepted]
PHST- 2017/11/08 00:00 [revised]
PHST- 2017/11/22 06:00 [pubmed]
PHST- 2018/12/12 06:00 [medline]
PHST- 2017/11/22 06:00 [entrez]
AID - 10.1007/s10577-017-9567-7 [pii]
AID - 10.1007/s10577-017-9567-7 [doi]
PST - ppublish
SO  - Chromosome Res. 2018 Sep;26(3):153-162. doi: 10.1007/s10577-017-9567-7. Epub 2017 
      Nov 20.