Reef-building corals have species-specific ¹H-NMR profiles.

Abstract

<p>OPLS-DA models comparing ¹H-NMR profiles from (A) <i>Montipora aequituberculata, Pocillopora damicornis</i>, <i>Porites lobata</i> and <i>Seriatopora hystrix</i> and (B) between <i>M. aequituberculata</i> and <i>P. damicornis</i> only. Separation within and between species is represented by the t-orthogonal- and t-axis, respectively. Model statistics are reported (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0111274#pone-0111274-t002" target="_blank">Table 2</a>). (C and D) Corresponding loading plots showing ¹H-NMR-bin coefficients. Variables driving separation in the 4-species OPLS-DA model (A) are identified with numbers corresponding to unknowns (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0111274#pone-0111274-t004" target="_blank">Table 4</a>). Only significant variables are indicated for each model. Ala = Alanine, Trig = Trigonelline, Thre/Lac = Threonine/Lactate.</p