The evolution of fruit scent: phylogenetic and developmental constraints.
The evolution of fruit scent: phylogenetic and developmental constraints.
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水果气味的演变：系统发育和发育约束。
DOI：
10.1186/s12862-020-01708-2
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发表时间：
2020-10-27
影响因子：
3.4
通讯作者：
Ayasse M
中科院分区：
文献类型：
--
作者：
Nevo O;Valenta K;Kleiner A;Razafimandimby D;Jeffrey JAJ;Chapman CA;Ayasse M
果实气味越来越被认为是一种进化的信号，其功能是吸引动物种子传播者和促进植物繁殖。然而，像所有性状一样，水果气味可能会在相互冲突的选择压力和各种限制条件下进化。两个主要的限制是（i）系统发育的限制，其中性状是从祖先继承的，而不是适应当前的条件和（ii）发育的限制，如果表型是由个体内的其他性状的表达所限制。我们测试是否系统发育的限制发挥作用，在水果气味的进化，通过计算来自三个研究地点的98种成熟水果的系统发育信号。然后，我们估计的重要性，发展的制约因素，通过检查是否成熟的水果往往会排放的化合物，化学相似，并分享生物合成途径，化合物排放的同种未成熟的水果，他们发展。我们发现，密切相关的类群是不是更类似于彼此比非常不同的类群，从而表明，水果的气味显示很少的系统发育信号。与此同时，虽然同一物种的成熟和未成熟的果实往往会释放不同的化学物质，但它们往往会使用来自类似生物合成途径的化学物质，这表明一些发育限制因素决定了成熟果实的气味。我们的研究结果突出了水果香味进化的复杂景观。一方面，水果香味的进化不受共同祖先的限制。另一方面，可用于成熟水果的化学品的范围可能受到未成熟水果需求的限制。
Fruit scent is increasingly recognized as an evolved signal whose function is to attract animal seed dispersers and facilitate plant reproduction. However, like all traits, fruit scent is likely to evolve in response to conflicting selective pressures and various constraints. Two major constraints are (i) phylogenetic constraints, in which traits are inherited from ancestors rather than adapted to current conditions and (ii) developmental constraints, if phenotypes are limited by the expression of other traits within the individual. We tested whether phylogenetic constraints play a role in fruit scent evolution by calculating the phylogenetic signal in ripe fruits of 98 species from three study sites. We then estimated the importance of developmental constraints by examining whether ripe fruits tend to emit compounds that are chemically similar to, and share biosynthetic pathways with, compounds emitted by conspecific unripe fruits from which they develop. We show that closely related taxa are not more similar to each other than to very distinct taxa, thus indicating that fruit scent shows little phylogenetic signal. At the same time, although ripe and unripe fruits of the same species tend to emit different chemicals, they tend to employ chemicals originating from similar biosynthetic pathways, thus indicating that some developmental constraints determine ripe fruit scent. Our results highlight the complex landscape in which fruit scent has evolved. On one hand, fruit scent evolution is not limited by common ancestry. On the other hand, the range of chemicals that can be employed in ripe fruits is probably constrained by the needs of unripe fruits.
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影响因子：
13.6
作者：
Nevo O;Razafimandimby D;Jeffrey JAJ;Schulz S;Ayasse M
通讯作者：
Ayasse M
影响因子：
1.8
作者：
Junker RR
通讯作者：
Junker RR
DOI：
10.1073/pnas.0904786106
发表时间：
2009-10-27
影响因子：
11.1
作者：
Kursar, Thomas A.;Dexter, Kyle G.;Coley, Phyllis D.
通讯作者：
Coley, Phyllis D.
DOI：
10.1098/rspb.1999.0702
发表时间：
1999-04-22
影响因子：
4.7
作者：
Johnson, KP;McKinney, F;Sorenson, MD
通讯作者：
Sorenson, MD
影响因子：
2.9
作者：
Eriksson, O;Ehrlen, J
通讯作者：
Ehrlen, J