2014
DOI: 10.4161/15592324.2014.977715
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Gamete attachment process revealed in flowering plant fertilization

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Cited by 13 publications
(7 citation statements)
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“…Chlamydomonas FUS1 [33, 34] and Arabidopsis GEX2 [35, 36] are single-pass TM proteins containing Ig-like filamin repeat domains, and they participate in gamete attachment and fusion, respectively. In mice, disruption of the Bsg (Basigin) gene, which encodes a single-pass TM protein with dual Ig-like domains, results in sterility of both males and females and in arrest of spermatogenesis [37].…”
Section: Resultsmentioning
confidence: 99%
“…Chlamydomonas FUS1 [33, 34] and Arabidopsis GEX2 [35, 36] are single-pass TM proteins containing Ig-like filamin repeat domains, and they participate in gamete attachment and fusion, respectively. In mice, disruption of the Bsg (Basigin) gene, which encodes a single-pass TM protein with dual Ig-like domains, results in sterility of both males and females and in arrest of spermatogenesis [37].…”
Section: Resultsmentioning
confidence: 99%
“…The Filamin gene family is mainly localized in cell membranes and has been reported to be involved in the composition of the human cytoskeleton, cancer cell metastasis and certain growth processes [ 14 , 15 , 16 , 17 ]. GEX2, a member of the Filamin gene family in plants, plays important roles in the processes of sperm recognition and fusion in Arabidopsis [ 3 , 20 , 21 , 22 ], Zea mays [ 24 , 25 , 26 ] and Chlamydomonas [ 27 , 28 ]. Due to the lack of research about Filamin gene family members in cotton, this paper conducted a systematic study on the cotton Filamin gene family and screened out genes that may have the same function as Arabidopsis Filamin gene family members, which was determined according to the structure, expression, evolutionary analysis and interaction analysis of these genes.…”
Section: Discussionmentioning
confidence: 99%
“…A family member with two Filamin domains, named GEX2 , has been extensively studied in recent years and is mainly involved in the process of double fertilization in plants. In 2005, AtGEX2 ( At5g49150 ), belonging to the Filamin gene family, was found to be active in sperm cells but not in other vegetative cells, and GEX2 is required for gametophyte attachment in Arabidopsis [ 20 , 21 , 22 , 23 ]. In maize, GEX2 is also localized to sperm membranes and has been found to be involved in gametophyte fusion [ 24 , 25 , 26 ].…”
Section: Introductionmentioning
confidence: 99%
“…As soon as the pollen tube reaches an unfertilized egg cell, it bursts open and releases the two sperm cells. Whereas, the processes of the growing pollen tube (Lord and Russell, 2002 ; Moscatelli and Idilli, 2009 ; Onelli and Moscatelli, 2013 ) and the fertilization process itself (Lord and Russell, 2002 ; Mori and Igawa, 2014 ; Takahashi and Igawa, 2019 ) are well-studied, surprisingly little is known about the transport process of the two sperm cells inside the pollen tube. In most flowering plants including the model plant Arabidopsis thaliana , the sperm cells travel together and are interconnected with each other as well as with the vegetative nucleus by a cytoplasmic projection (Lalanne and Twell, 2002 ).…”
Section: Introductionmentioning
confidence: 99%