. 2003 Nov;133(3):1296–1305. doi: 10.1104/pp.103.027631

Table I.

Changes in leaf N content, leaf mass per area (LMA), and anthocyanin reflectance indices for mutant and wild-type plants of each anthocyanin-producing species and Betula papyrifera within three different environmental regimes

Means with the same letter are not significantly different at α = 0.05 within each treatment. Data are means ± se (n = 6).

Species/Treatment/Plant	Presenescent N Content	Senesced N Content (Resorption Proficiency)	Resorption Efficiency	Presenescent LMA	Senesced LMA	Change in LMA	Senesced Anthocyanin Index
	g m^-2		%	g m^-2		%	(R₅₅₀)^-1 - (R₇₀₀)^-1
Low stress
C. sericea
WT	0.89 ± 0.01d	0.16 ± 0.01a	82 ± 1.1a	60.3 ± 1.1d	46.2 ± 1.8b	-23	18.9 ± 0.4a
Mutant	1.13 ± 0.02a	0.17 ± 0.01ab	85 ± 0.9a	70.1 ± 3.9b	49.2 ± 2.7b	-29	0.52 ± 0.08b^a
V. elliottii
WT	0.93 ± 0.01cd	0.22 ± 0.01c	77 ± 0.7b	74.3 ± 1.8b	67.0 ± 1.7a	-10	19.0 ± 0.9a
Mutant	0.60 ± 0.02e	0.16 ± 0.01ab	73 ± 1.4c	63.3 ± 0.54cd	53.7 ± 1.3b	-15	0.54 ± 0.06b^a
V. sargentii
WT	0.90 ± 0.05d	0.19 ± 0.01bc	79 ± 1.2b	59.7 ± 1.2d	46.7 ± 3.4b	-22	19.8 ± 1.1a
Mutant	1.09 ± 0.04ab	0.38 ± 0.03d	65 ± 1.5d	92.0 ± 2.6a	69.0 ± 4.9a	-25	0.38 ± 0.1b^a
B. papyrifera
WT	1.00 ± 0.06bc	0.16 ± 0.01ab	84 ± 0.7a	69.0 ± 1.9bc	49.0 ± 1.4b	-29	0.42 ± 0.1b^a
Outdoor
C. sericea
WT	0.92 ± 0.04d	0.19 ± 0.01a	79 ± 0.9a	93.0 ± 0.6bc	64.2 ± 3.9e	-31	19.7 ± 0.5b
Mutant	1.02 ± 0.05cd	0.40 ± 0.03c	61 ± 0.6c	93.7 ± 4.5bc	101.8 ± 4.4bc	9^b	0.87 ± 0.08c^a
V. elliottii
WT	1.20 ± 0.05ab	0.28 ± 0.01b	76 ± 1.3ab	123.0 ± 5.1a	104.5 ± 2.5b	-15	22.1 ± 0.5a
Mutant	0.73 ± 0.02e	0.40 ± 0.02c	45 ± 1.1d	92.0 ± 3.7c	93.8 ± 2.7c	2^b	0.72 ± 0.08c^a
V. sargentii
WT	1.14 ± 0.06abc	0.31 ± 0.02b	73 ± 1.6b	95.3 ± 3.1bc	65.0 ± 4.8e	-32	20.4 ± 1.1ab
Mutant	1.24 ± 0.02a	0.76 ± 0.02d	39 ± 0.8e	122.3 ± 0.8a	120.8 ± 3.5a	-1^b	0.49 ± 0.2c^a
B. papyrifera
WT	1.11 ± 0.03bc	0.23 ± 0.01a	79 ± 1.3a	102.3 ± 2.7b	81.8 ± 1.9d	-20	0.29 ± 0.09c^a
High stress
C. sericea
WT	0.90 ± 0.02c	0.23 ± 0.03ab	75 ± 2.0ab	62.7 ± 1.8c	48.3 ± 3.0d	-23	19.8 ± 0.9a
Mutant	1.10 ± 0.02a	0.36 ± 0.02c	67 ± 1.4c	69.8 ± 3.0b	60.2 ± 3.1c	-14	0.68 ± 0.2b^a
V. elliottii
WT	0.89 ± 0.02c	0.19 ± 0.01a	79 ± 1.0a	70.7 ± 1.8b	63.5 ± 1.8bc	-10	20.1 ± 0.4a
Mutant	0.65 ± 0.04d	0.39 ± 0.01c	40 ± 2.1d	63.8 ± 1.5c	66.1 ± 1.3b	4^b	0.58 ± 0.1b^a
V. sargentii
WT	0.87 ± 0.05c	0.28 ± 0.01b	68 ± 1.3bc	58.6 ± 1.4c	49.3 ± 1.2d	-16	18.5 ± 0.7a
Mutant	1.11 ± 0.04a	0.84 ± 0.03d	24 ± 0.9e	90.7 ± 2.2a	76.8 ± 6.4a	-15	0.24 ± 0.06b^a
B. papyrifera
WT	1.02 ± 0.05b	0.21 ± 0.03a	80 ± 1.5a	73.3 ± 2.4b	50.2 ± 1.1d	-32	0.23 ± 0.6b^a

^aAnthocyanin values are not significantly different than presenescent, anthocyanin-free leaves.

^b Change in LMA is not significantly different from zero at α = 0.05.