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Table 1 Correlations of individual PnKTI gene expression versus total foliar trypsin-inhibiting activity (μg g− 1 DW; data from [14]) in all herbivore-treated (L. dispar, A. mogadorensis, and P. vulgatissima feeding) samples of black poplar leaves. Spearman rank-correlation, significant values are highlighted in bold font

From: Poplar protease inhibitor expression differs in an herbivore specific manner

PnKTI

Spearman’s ρ

P

PnKTIA6

0.707

0.001

PnKTI A7

0.648

0.004

PnKTI A13

0.646

0.004

PnKTI A14

0.730

0.001

PnKTI A15

0.700

0.001

PnKTI B1

0.710

0.001

PnKTI B5

0.597

0.009

PnKTI D2

0.582

0.011