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Local loss of the zebra-like coloration supports the aposematic and other visual defense hypotheses in Silybum marianum

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image of Israel Journal of Plant Sciences

ABSTRACTThe question of the spread of an aposematic or of an otherwise visually defended plant type within a non-aposematic or a visually non-defended population is a long-standing enigma that has received considerable theoretical attention. However, the spreading of aposematic or otherwise visually defended plant genotypes within a non-aposematic or a non-visually-defended population has never, as far as is known, been shown or studied in nature in wild plant populations. This study investigates the loss of the various simultaneous types of defensive coloration in the spiny thistle Silybum marianum by a mutation that occurred independently and found in 13 wild populations in Israel. Mutant plants have plain leaves rather than leaves of the zebra-like wild-type, which has a white network of stripes on the upper leaf surface. The mutants never spread beyond several dozen meters and usually only over several meters. The mutation has a simple developmental origin, since the white variegation is the result of small air spaces formed between the epidermis and the photosynthetic parenchyma (causing no loss of photosynthetic capacity in white areas), and the mutants have no such subepidermal air spaces. In order to examine the possibility of establishing a pure population lacking this type of defensive coloration, seeds of mutant plants were collected from two wild populations where they grew mixed with the wild-type and a pure mutant population was selected and maintained for 4 years. Thus, 13 cases of very restricted spread of the visually defenseless mutant demonstrate the probable contribution of the variegation to plant fitness, supporting the hypothesis that conspicuous leaf variegation functions as defensive coloration.

Affiliations: 1: Department of Biology & Environment, Faculty of Natural Sciences, University of Haifa – Oranim


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1. Allen JA,, Cooper JM. 1985. "Crypsis and masquerade". J Biol Educ. Vol 19:268270. [Crossref]
2. Bates HW. 1862. "Contributions to an insect fauna of the Amazon valley. Lepidoptera: Heliconidae". Trans Linn Soc London. Vol 23:495566. [Crossref]
3. Brady J,, Shereni W. 1988. "Landing responses of the tsetse fly Glossina morsitans morsitans Westwood and the stable fly Stomoxys calcitrans (L.) (Diptera: Glossinidae & Muscidae) to black-and-white patterns: a laboratory study". Bull Entomol Res. Vol 78:301311. [Crossref]
4. Cott HB. 1940. Adaptive coloration in animals. London: Methuen & Co.
5. Danin A,, Yom-Tov Y. 1990. "Ant nests as primary habitats of Silybum marianum (Compositae)". Pl Syst Evol. Vol 169:209217. [Crossref]
6. Doku C,, Brady J. 1989. "Landing site preferences of Glossina morsitans morsitans Westwood (Diptera: Glossinidae) in the laboratory: avoidance of horizontal features?" Bull Entomol Res. Vol 79:521528. [Crossref]
7. Edmunds M. 1974. Defence in animals: a survey of anti-predator defences. Harlow: Longman Group.
8. Egri Á,, Blahó M,, Kriska G,, Farkas R,, Gyurkovszky M,, Åkesson S,, Horváth G. 2012. "Polarotactic tabanids find striped patterns with brightness and/or polarization modulation least attractive: an advantage of zebra stripes". J Exp Biol. Vol 215:736745. [Crossref]
9. Endler JA. 1981. "An overview of the relationships between mimicry and crypsis". Biol J Linn Soc. Vol 16:2531. [Crossref]
10. Feinbrun-Dothan N. 1978. Flora Palaestina. Vol. III. Jerusalem: The Israel Academy of Sciences and Humanities.
11. Forbes P. 2009. Dazzled and deceived: mimicry and camouflage. New Haven, CT: Yale University Press.
12. Gabay R,, Plitmann U,, Danin A. 1994. "Factors affecting the dominance of Silybum marianum L. (Asteraceae) in its specific habitats". Flora. Vol 189:201206. [Crossref]
13. Gibson G. 1992. "Do tsetse flies ‘see’ zebras? A field study of the visual response of tsetse to striped targets". Physiol Entomol. Vol 17:141147. [Crossref]
14. Hara N. 1957. "Study of the variegated leaves, with special reference to those caused by air spaces". Jap J Bot. Vol 16:86101.
15. Hetz E,, Liersch R,, Schieder O. 1995. "Genetic investigations on Silybum marianum and S. eburneum with respect to leaf colour, outcrossing ratio, and flavonolignan composition". Planta Medica. Vol 61:5457. [Crossref]
16. Keasar T,, Gerchman Y,, Lev-Yadun S. 2016. "A seven-year study of flower-color polymorphism in a Mediterranean annual plant". Basic Appl Ecol. Vol 17:741750. [Crossref]
17. Kendrick JW,, Tucker J,, Peoples SA. 1955. "Nitrate poisoning in cattle due to ingestion of variegated thistle, Silybum marianum". J Am Vet Med Assoc. Vol 126:5356.
18. Lev-Yadun S. 2001. "Aposematic (warning) coloration associated with thorns in higher plants". J Theor Biol. Vol 210:385388. [Crossref]
19. Lev-Yadun S. 2003. "Why do some thorny plants resemble green zebras?" J Theor Biol. Vol 244:483489.
20. Lev-Yadun S., 2009a. "Aposematic (warning) coloration in plants". In: Baluska F, editor. Plant-environment interactions. From sensory plant biology to active plant behavior. Berlin: Springer-Verlag; p. 167202.
21. Lev-Yadun S. 2009b. "Müllerian and Batesian mimicry rings of white-variegated aposematic spiny and thorny plants: a hypothesis". Isr J Plant Sci. Vol 57:107116. [Crossref]
22. Lev-Yadun S. 2014a. "The proposed anti-herbivory roles of white leaf variegation". Prog Bot. Vol 76:241269.
23. Lev-Yadun S. 2014b. "Potential defence from herbivory by ‘dazzle effects’ and ‘trickery coloration’ of leaf variegation". Biol J Linn Soc. Vol 111:692697. [Crossref]
24. Lev-Yadun S. 2014c. "Defensive masquerade by plants". Biol J Linn Soc. Vol 113:11621166. [Crossref]
25. Lev-Yadun S. 2016. Defensive (anti-herbivory) coloration in land plants. Anti-herbivory plant coloration and morphology. Zug: Springer.
26. Lev-Yadun S,, Ne'eman G,, Shanas U. 2009. "A sheep in wolf's clothing: do carrion and dung odours of flowers not only attract pollinators but also deter herbivores?" BioEssays. Vol 31:8488. [Crossref]
27. Mallet J,, Gilbert LE. 1995. "Why are there so many mimicry rings? Correlations between habitat, behaviour and mimicry in Heliconius butterflies". Biol J Linn Soc. Vol 55:159180.
28. Mallet J,, Joron M. 1999. "Evolution of diversity in warning color and mimicry: polymorphisms, shifting balance, and speciation". Annu Rev Ecol Syst. Vol 30:201233. [Crossref]
29. Marples NM,, Kelly DJ,, Thomas RJ. 2005. "The evolution of warning coloration is not paradoxical". Evolution. Vol 59:933940. [Crossref]
30. Midgley JJ. 2004. "Why are spines of African Acacia species white?" Afr J Range For Sci. Vol 21:211212. [Crossref]
31. Morazzoni P,, Bombardelli E. 1995. "Silybum marianum (Carduus marianus)". Fitoterapia. Vol 66:342.
32. Müller F. 1879. "Ituna and Thyri""dia; a remarkable case of mimicry in butterflies". Proc Entomol Soc Lond. 1879:xxxxix.
33. Niemelä P,, Tuomi J. 1987. "Does the leaf morphology of some plants mimic caterpillar damage?" Oikos. Vol 50:256257. [Crossref]
34. Ohgushi T. 2005. "Indirect interaction webs: herbivore-induced effects through trait change in plants". Annu Rev Ecol Syst. Vol 36:81105. [Crossref]
35. Poulton EB. 1890. The colours of animals. Their meaning and use. Especially considered in the case of insects. 2nd ed. London: Kegan Paul, Trench, Trübner, & Co.
36. Precipitation map. 1987. Israel Meteorological Service, Ministry of Transport. Bet Dagan.
37. Ronel M,, Lev-Yadun S. 2012. "The spiny, thorny and prickly plants in the flora of Israel". Bot J Linn Soc. Vol 168:344352. [Crossref]
38. Rothschild M,, Moore B,. 1987. "Pyrazines as alerting signals in toxic plants and insects". In: Labeyrie V,, Fabres G,, Lachaise D, editors. Insects – plants. Dordrecht: Dr W. Junk Publishers; p. 97101.
39. Rubino DL,, McCarthy BC. 2004. "Presence of aposematic (warning) coloration in vascular plants of southeastern Ohio". J Torrey Bot Soc. Vol 131:252256. [Crossref]
40. Ruxton GD. 2009. "Non-visual crypsis: a review of the empirical evidence for camouflage to senses other than vision". Phil Trans R Soc B. Vol 364:549557. [Crossref]
41. Ruxton GD,, Sherratt TN,, Speed MP. 2004. Avoiding attack. The evolutionary ecology of crypsis, warning signals & mimicry. Oxford: Oxford University Press.
42. Scarchuk J,, Lent JM. 1965. "The structure of mottled-leaf summer squash". J Hered. Vol 56:167168. [Crossref]
43. Schaefer HM,, Ruxton GD. 2011. Plant-animal communication. New York: Oxford University Press.
44. Shmida A. 1985. "Why do some Compositae have an inconsistently deciduous pappus?" Ann Missouri Bot Gard. Vol 72:184186. [Crossref]
45. Skelhorn J. 2015. "Masquerade". Curr Biol. Vol 25:R643R644. [Crossref]
46. Skelhorn J,, Rowland HM,, Delf J,, Speed MP,, Ruxton GD. 2011. "Density-dependent predation influences the evolution and behavior of masqueradinf prey". Proc Natl Acad Sci USA. Vol 108:65326536. [Crossref]
47. Skelhorn J,, Rowland HM,, Ruxton GD. 2010a. "The evolution and ecology of masquerade". Biol J Linn Soc. Vol 99:18.
48. Skelhorn J,, Rowland HM,, Speed MP,, Ruxton GD. 2010b. "Masquerade: camouflage without crypsis". Science. Vol 327:51. [Crossref]
49. Skelhorn J,, Rowland HM,, Speed MP,, De Wert L,, Quinn L,, Delf J,, Ruxton GD. 2010c. "Size-dependent misclassification of masquerading prey". Behav Ecol. Vol 21:13441348. [Crossref]
50. Skelhorn J,, Ruxton GD. 2011. "Context-dependent misclassification of masquerading prey". Evol Ecol. Vol 25:751761. [Crossref]
51. Skelhorn J,, Ruxton GD. 2013. "Size-dependent microhabitat selection by masquerading prey". Behav Ecol. Vol 24:8997. [Crossref]
52. Smith AP. 1986. "Ecology of leaf color polymorphism in a tropical forest species: habitat segregation and herbivory". Oecologia. Vol 69:283287. [Crossref]
53. Soltau U,, Dötterl S,, Liede-Schumann S. 2009. "Leaf variegation in Caladium steudneriifolium (Araceae): a case of mimicry?" Evol Ecol. Vol 23:503512. [Crossref]
54. Speed MP,, Ruxton GD. 2005. "Warning displays in spiny animals: one (more) evolutionary route to aposematism". Evolution. Vol 59:24992508. [Crossref]
55. Tsukaya H,, Okada H,, Mohamed M. 2004. "A novel feature of structural variegation in leaves of the tropical plant Schismatoglottis calyptrata". J Plant Res. Vol 117:477480. [Crossref]
56. Tutin TG. 1976. Flora Europaea. Vol. 4. Cambridge: Cambridge University Press.
57. Waage JK. 1981. "How the zebra got its stripes - biting flies as selective agents in the evolution of zebra coloration". J Entomol Soc South Africa. Vol 44:351358.
58. Wilkinson N. 1969. A brush with life. London: Seeley Service & Co.

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