TY - JOUR
T1 - Holocentric chromosome behaviour in Cuscuta (Cuscutaceae)
AU - Pazy, Batia
AU - Plitmann, Uzi
PY - 1994/3
Y1 - 1994/3
N2 - The present study demonstrates that Cuscuta babylonicaChoisy has holocentric chromosomes. Evidence for this phenomenon comes from three different observations. (1) Mitosis: During metaphase and anaphase the sister-chromatids are situated parallel to the equatorial plane with no sign of localized kinetochore activity. (2) Inverted meiosis in microsporocytes. (3) X-rayed microsporocytes, in which the numerous chromosome fragments do not show any lagging or formation of micronuclei. We assume that only one out of the three subgenera in Cuscuta, namely subg. Cuscuta, has holocentric chromosomes, while the two other subgenera have monocentric chromosomes.
AB - The present study demonstrates that Cuscuta babylonicaChoisy has holocentric chromosomes. Evidence for this phenomenon comes from three different observations. (1) Mitosis: During metaphase and anaphase the sister-chromatids are situated parallel to the equatorial plane with no sign of localized kinetochore activity. (2) Inverted meiosis in microsporocytes. (3) X-rayed microsporocytes, in which the numerous chromosome fragments do not show any lagging or formation of micronuclei. We assume that only one out of the three subgenera in Cuscuta, namely subg. Cuscuta, has holocentric chromosomes, while the two other subgenera have monocentric chromosomes.
KW - Cuscuta
KW - Cuscutaceae
KW - diffuse centromeres
KW - diffuse kinetochores
KW - Holocentric chromosomes
UR - http://www.scopus.com/inward/record.url?scp=0028001917&partnerID=8YFLogxK
U2 - 10.1007/BF00985345
DO - 10.1007/BF00985345
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AN - SCOPUS:0028001917
SN - 0378-2697
VL - 191
SP - 105
EP - 109
JO - Plant Systematics and Evolution
JF - Plant Systematics and Evolution
IS - 1-2
ER -