Host-driven morphological variability in Orobanche crenata (Orobanchaceae)

Studies on interactions between Orobanche species and their hosts are mainly focused on resistance, radical interactions, andhaustorium development. The influence of the host plant on morphology of the parasite under environmental controlled conditions isnot reported in the literature. With the aim of filling this gap, the results of cultivation experiments of Orobanche crenata on Vicia faba,V. sativa, Pisum sativum, Cicer arietinum, and Lathyrus clymenum are presented. The tested population of O. crenata infected all thestudied hosts but showed preferences toward Vicia and Pisum and, in particular, toward a foreign V. sativa cv. The higher resistance ofthe evaluated local cv. could be due to coevolution between host and parasite. There was little variation in times of emergence: about 110days on V. faba, while around 125 on P. sativum, C. arietinum, and V. sativa. The shape and size of flowers of O. crenata were influencedby its hosts. The more flourishing the host, the more vigorous the parasite with respect to overall size, number of flowers, and density ofthe inflorescence. However, significant variations were also observed in the shape of the calyx and the colour of the corolla and stigma.These observations suggest that other taxa of Orobanche that grow in the wild, which are considered to be different species, could bemorphotypes of the same taxon, although a process of speciation may be in progress.

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Beck-Mannagetta G (1930). Das Pflanzenreich (Regni vegetabilis conspectus) - Orobanche. Verlag Engelmann 96: 1-305. Domina G, Scibetta S (2006). Research on Orobanche crenata Management in Sicily from the 19th to the Early 20th Century. Phytoparasitica 34: 111-114.
Domina G, Greuter W, Raimondo FM (2017a). A taxonomic reassessment of the Centaurea busambarensis complex (Compositae, Cardueae), with description of a new species from the Egadi Islands (W Sicily). Isr J Plant Sci https://doi.org /10.1080/07929978.2016.1257146.
Domina G, Scibetta S, Scafidi F, Giovino A (2017b). Contribution to the identification of Dianthus rupicola (Caryophyllaceae) subspecies using morphological and molecular approaches. Phytotaxa 291: 17-32.
Eizenberg H, Colquhoun JB, Mallory-Smith CA (2003). Variation in clover response to small broomrape (Orobanche minor). Weed Sci 51: 759-763.
Gauthier M, Véronési C, El-Halmouch Y, Leflon M, Jestin C, Labalette F, Simier P, Delourme R, Delavault P (2012). Characterisation of resistance to branched broomrape, Phelipanche ramosa, in winter oilseed rape. Crop Prot 42: 56-63.
Giovino A, Domina G, Bazan G, Campisi P, Scibetta S (2015). Taxonomy and conservation of Pancratium maritimum (Amaryllidaceae) and relatives in the Central Mediterranean. Acta Bot Gallica 162: 289-299.
Hammer Ø (2017). PAST 3.06. Available from: http://folk.uio.no/ ohammer/past (Last accessed 2 August 2017).
Hammer Ø, Harper DAT, Ryan PD (2001). PAST: paleontological Statistics software package for education and data analysis. Palaeontol Electron 4: 1-9.
Joel DM, Hershenhorn Y, Eizenberg H, Aly R, Ejeta G, Rich, PJ, Ransom JK, Sauerborn J, Rubiales D (2007). Biology and management of weedy root parasites. Horticultural Reviews 33: 267-349.
Molinero-Ruiz L, Delavault P, Pérez-Vich B, Pacureanu-Joita M, Bulos M, Altieri E, Domínguez J (2015). History of the race structure of Orobanche cumana and the breeding of sunflower for resistance to this parasitic weed: a review. Span J Agric Res 13: e10R01.
Musselman LJ (1994). Taxonomy and spread of Orobanche. In: Pieterse AH, Verkleij JAC, ter Borg SJ, Biology and management of Orobanche. Proceedings of the Third International Workshop of Orobanche and Related Striga Research. Royal Tropical Institute, Amsterdam, Netherlands, pp. 27-35.
Musselman LJ, Parker C (1982). Preliminary host ranges of some strains of economically important broomrapes (Orobanche). Econ Bot 36: 270-273.
Osuji GA, Onyeagu SI, Ekezie DD (2013). Comparison of jackknife and resubstitution methods in the estimation of error rates in discriminant analysis. International Journal of Mathematics and Statistics Studies 1: 29-37.
Parker C, Riches CR (1993). Parasitic Weeds of the World: Biology and Control. Wallingford, UK: CAB International. Pérez-De-Luque A, Rubiales D, Cubero JI, Press MC, Scholes
J, Yoneyama K, Takeuchi Y, Plakhine D, Joel DM (2005). Interaction between Orobanche crenata and its host legumes: unsuccessful haustorial penetration and necrosis of the developing parasite. Ann Bot-London 95: 935-942.
Pujadas-Salvà AJ, Velasco L (2000). Comparative studies on Orobanche cernua L. and O. cumana Wallr. (Orobanchaceae) in the Iberian Peninsula. Bot J Linn Soc 134: 513-527.
Satovic Z, Joel DM, Rubiales D, Cubero JI, Román B (2009). Population genetics in weedy species of Orobanche. Australasian Plant Pathology 38: 228-234.
Schneeweiss GM (2007). Correlated evolution of life history and host range in the nonphotosynthetic parasitic flowering plants Orobanche and Phelipanche (Orobanchaceae). J Evolution Biol 20: 471-478.
Schneider AC, Colwell AEL, Schneeweiss GM, Baldwin BG (2016). Cryptic host-specific diversity among western hemisphere broomrapes (Orobanche s.l., Orobanchaceae). Ann Bot- London 118: 1101-1111.
Thorogood CJ, Rumsey FJ, Hiscock SH (2009). Host-specific races in the holoparasitic angiosperm Orobanche minor: implications for speciation in parasitic plants. Ann Bot-London 103: 1005- 1014.
Thorogood CJ, Rumsey FJ, Harris SA, Hiscock SH (2008). Hostdriven divergence in the parasitic plant Orobanche minor Sm. (Orobanchaceae). Mol Ecol 17: 4289-4303.