000			03785nab|a22003977a|4500
001			64503
003			MX-TxCIM
005			20220331160234.0
008			20211s2022||||xxu|||p|op||||00||0|eng|d
022			_a2572-2611 (Online)
024	8		_ahttps://doi.org/10.1002/ppp3.10236
040			_aMX-TxCIM
041			_aeng
100	1		_aMasanga, J. _911059
245	1	0	_aComparative phylogeographic analysis of Cuscuta campestris and Cuscuta reflexa in Kenya : _bimplications for management of highly invasive vines
260			_aUSA : _bWiley, _c2022.
500			_aPeer review
500			_aOpen Access
520			_aEastern Africa is currently infested with dodders—highly invasive vines that threaten agriculture and biodiversity. We describe historical and ecological factors that have potentially shaped dodder invasion in this region. Our results reveal high levels of genetic diversity within dodder populations, which could enhance their ability to colonize new niches. Further, we identify two main population clusters in eastern and western Kenya, a pattern that is mirrored in an established invader (Cuscuta campestris) and a recent introduction (C. reflexa). Immediate control strategies are needed to limit deliberate or inadvertent seed/vine dispersal, eradicate existing populations, and monitor influx of propagules. Summary: Invasion by dodder (Cuscuta spp.), holo-parasitic plants of the Convolvulaceae family, has recently surged in Eastern Africa. Particularly, colonization by two species, Cuscuta campestris and Cuscuta reflexa that have a broad host range and rapid invasiveness, has escalated. We examined the first assessment of genetic diversity of these invasive species in Kenya to inform subsequent management practices. A comparative phylogeographic analysis, based on chloroplast and nuclear ribosomal DNA, was performed to determine genetic diversities, population structure, and isolation of C. campestris and C. reflexa in Kenya. Results reveal high genetic variation in both species within populations across localities. C. campestris had more haplotypes and higher gene diversity (P =.0001) and heterozygosity (P =.004) than C. reflexa. Both species were geographically separated, evidenced by two distinct lineages that mostly corresponded to localities east and west of Kenya. Correlation between genetic and geographic distances revealed evidence of isolation by distance (IBD). We attribute these genetic variation patterns to establishment via similar invasion routes for the studied Cuscuta spp. and suggest that Cuscuta invasion in Kenya is in the early stages of establishment. Rapid eradication is urgently needed to prevent shifts to economically important hosts, which would have devastating impacts. We recommend (i) development of targeted efforts to curb new introductions to limit the potential for genetic variability and adaptation, (ii) prevention of seed and vine dispersal from current incursions, and (iii) complete eradication of existing populations where this is feasible.
546			_aText in English
650		7	_aCuscuta _2AGROVOC _919860
650		0	_aGene flow _2AGROVOC _919444
650		7	_aInvasive species _2AGROVOC _918970
650		7	_aIsolation _2AGROVOC _920129
650		7	_aParasitic plants _2AGROVOC _91195
651		7	_2AGROVOC _93783 _aKenya
700	1		_aOduor, R. _919865
700	1		_aAlakonya, A. _911060 _8001711980 _gGenetic Resources Program
700	1		_aNgugi, M. _919866
700	1		_aOjola, P. _919867
700	1		_aBellis, E.S. _99586
700	1		_aRuno, S. _917616
773	0		_tPlants, People, Planet _dUSA : Wiley, 2022. _gv. 4, no. 2, p. 182-193 _x2572-2611
856	4		_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/21724
942			_cJA _n0 _2ddc
999			_c64503 _d64495