Comparison of phosphorus uptake and accumulation capacity among three plant species

doi:10.17521/cjpe.2015.0007

Abstract

Abstract: Aims

Phosphorus mining wasteland is a very special kind of degraded ecosystems, where vegetation and landscape are severely damaged. Our objective was to select plants suitable for phytoremediation of phosphorus-rich soils in mining wasteland.

<i>Methods</i>

We conducted pot experiments to investigate phosphorus uptake and accumulation capacity in Helianthus annuus, Sorghum sudanense and Cucurbita moschata grown in soils with different levels of phosphorus supply. The phosphorus concentrations applied are 0, 100, 300, 500 and 700 mg·kg^-1. Phosphorus concentration, phosphorus accumulation, bioaccumulation and translation coefficient of the plants were measured for three growth periods (4 weeks, 7 weeks, 10 weeks), respectively.

<i>Important findings </i>

Over the same growth period, phosphorus concentration in shoots of the three plant species increased with increasing phosphorus supplies, with the maximum of 9.67 g·kg^-1 in H. annuus, 4.86 g·kg^-1 in S. sudanense, and 6.32 g·kg^-1 in C. moschata. Under the same phosphorus treatments, phosphorus concentration significantly increased with growth time in shoots of H. annuus, decreased in shoots of S. sudanense, and did not significantly change in shoots of C. moschata. The aboveground total phosphorus accumulation in the three plant species all reached highest values when grown for 10 weeks in soils supplied with 700 mg·kg^-1 phosphorus, amounting to 217.83 mg·plant^-1 in H. annuus, 93.92 mg·plant^-1 in S. sudanense, 135.82 mg·plant^-1 in C. moschata, respectively. The bioaccumulation and translation coefficients in both H. annuus and S. sudanense exceeded 1.00 under each treatment. The peak values of the two coefficients were 11.39 and 4.09 for H. annuus. In conclusion, the phosphorus uptake and accumulation capacity of the tested plant species were in the order of H. annuus > C. moschata > S. sudanense, and H. annuus can be a possible candidate for phytoremediation of phosphorus mining wastelands.

Key words: phosphorus concentration in shoots, bioaccumulation coefficient, translation coefficient, phosphorus mining wasteland, Helianthus annuus, Sorghum sudanense, Cucurbita moschata

WU Hao,LU Zhi-Jun,HUANG Han-Dong,JIANG Ming-Xi. Comparison of phosphorus uptake and accumulation capacity among three plant species[J]. Chin J Plan Ecolo, 2015, 39(1): 63-71.

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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2015.0007

https://www.plant-ecology.com/EN/Y2015/V39/I1/63

Figures/Tables 7

References 28

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P处理 P treatment (mg·kg^-1)	向日葵 Helianthus annuus			苏丹草 Sorghum sudanense			南瓜 Cucurbita moschata
P处理 P treatment (mg·kg^-1)	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks
0	5.43 ± 0.29^Cd	14.68 ± 0.14^Ba	18.93 ± 0.67^Aa	2.66 ± 0.45^Ca	11.00 ± 0.43^Bc	22.87 ± 1.58^Aa	5.24 ± 0.24^Cc	11.43 ± 1.16^Ba	18.02 ± 1.01^Aa
100	7.31 ± 0.38^Cc	15.05 ± 0.48^Ba	18.18 ± 0.75^Aa	3.44 ± 0.32^Ca	9.98 ± 0.49^Bc	25.90 ± 2.79^Aa	8.52 ± 0.23^Ca	13.03 ± 0.75^Ba	19.20 ± 0.64^Aa
300	9.61 ± 0.73^Ca	15.78 ± 1.47^Ba	19.78 ± 0.43^Aa	3.71 ± 0.59^Ca	15.05 ± 1.00^Bb	30.18 ± 1.69^Aa	6.29 ± 0.56^Cbc	12.43 ± 0.15^Ba	19.62 ± 1.22^Aa
500	8.09 ± 0.30^Cbc	14.48 ± 0.62^Ba	22.65 ± 1.05^Aa	2.77 ± 0.65^Ca	15.62 ± 0.84^Bb	24.68 ± 0.64^Aa	6.81 ± 0.08^Cb	12.43 ± 0.84^Ba	17.15 ± 0.73^Aa
700	8.65 ± 0.23^Cab	16.30 ± 0.48^Ba	22.50 ± 2.04^Aa	3.16 ± 0.11^Ca	18.25 ± 0.89^Ba	27.43 ± 3.42^Aa	7.53 ± 0.65^Cab	14.90 ± 0.68^Ba	21.43 ± 0.73^Aa

P处理 P treatment (mg·kg^-1)	向日葵 Helianthus annuus			苏丹草 Sorghum sudanense			南瓜 Cucurbita moschata
P处理 P treatment (mg·kg^-1)	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks
0	5.43 ± 0.29^Cd	14.68 ± 0.14^Ba	18.93 ± 0.67^Aa	2.66 ± 0.45^Ca	11.00 ± 0.43^Bc	22.87 ± 1.58^Aa	5.24 ± 0.24^Cc	11.43 ± 1.16^Ba	18.02 ± 1.01^Aa
100	7.31 ± 0.38^Cc	15.05 ± 0.48^Ba	18.18 ± 0.75^Aa	3.44 ± 0.32^Ca	9.98 ± 0.49^Bc	25.90 ± 2.79^Aa	8.52 ± 0.23^Ca	13.03 ± 0.75^Ba	19.20 ± 0.64^Aa
300	9.61 ± 0.73^Ca	15.78 ± 1.47^Ba	19.78 ± 0.43^Aa	3.71 ± 0.59^Ca	15.05 ± 1.00^Bb	30.18 ± 1.69^Aa	6.29 ± 0.56^Cbc	12.43 ± 0.15^Ba	19.62 ± 1.22^Aa
500	8.09 ± 0.30^Cbc	14.48 ± 0.62^Ba	22.65 ± 1.05^Aa	2.77 ± 0.65^Ca	15.62 ± 0.84^Bb	24.68 ± 0.64^Aa	6.81 ± 0.08^Cb	12.43 ± 0.84^Ba	17.15 ± 0.73^Aa
700	8.65 ± 0.23^Cab	16.30 ± 0.48^Ba	22.50 ± 2.04^Aa	3.16 ± 0.11^Ca	18.25 ± 0.89^Ba	27.43 ± 3.42^Aa	7.53 ± 0.65^Cab	14.90 ± 0.68^Ba	21.43 ± 0.73^Aa

P处理 P treatment (mg·kg^-1)	向日葵 Helianthus annuus			苏丹草 Sorghum sudanense			南瓜 Cucurbita moschata
P处理 P treatment (mg·kg^-1)	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks
0	4.56 ± 0.16^Aa	3.40 ± 0.40^Aabc	4.35 ± 0.29^Ae	4.92 ± 0.50^Aa	3.87 ± 0.26^Ba	2.37 ± 0.15^Ca	3.96 ± 0.45^Ab	4.16 ± 0.17^Ac	3.54 ± 0.31^Ad
100	4.98 ± 0.14^Aa	3.83 ± 0.16^Bc	5.60 ± 0.42^Ad	5.48 ± 0.34^Aa	3.98 ± 0.47^Ba	2.73 ± 0.23^Ca	5.16 ± 0.25^Aab	5.72 ± 0.25^Ab	4.75 ± 0.16^Ac
300	4.65 ± 0.41^Ba	5.23 ± 0.11^Bb	7.36 ± 0.45^Ac	5.78 ± 0.31^Aa	3.84 ± 0.19^Ba	2.86 ± 0.07^Ca	5.30 ± 0.74^Aab	5.77 ± 0.33^Ab	5.66 ± 0.24^Abc
500	5.31 ± 0.67^Ca	6.78 ± 0.16^Ba	9.00 ± 0.21^Ab	5.33 ± 0.29^Aa	3.98 ± 0.32^Ba	3.24 ± 0.32^Ba	5.86 ± 0.37^Aa	5.70 ± 0.19^Ab	5.85 ± 0.42^Ab
700	5.28 ± 0.27^Ca	7.79 ± 0.63^Babc	11.39 ± 0.31^Aa	5.88 ± 0.16^Aa	4.32 ± 0.22^Aa	4.47 ± 0.60^Aa	6.19 ± 0.28^Aa	7.20 ± 0.57^Aa	7.90 ± 0.32^Aa

P处理 P treatment (mg·kg^-1)	向日葵 Helianthus annuus			苏丹草 Sorghum sudanense			南瓜 Cucurbita moschata
P处理 P treatment (mg·kg^-1)	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks
0	4.56 ± 0.16^Aa	3.40 ± 0.40^Aabc	4.35 ± 0.29^Ae	4.92 ± 0.50^Aa	3.87 ± 0.26^Ba	2.37 ± 0.15^Ca	3.96 ± 0.45^Ab	4.16 ± 0.17^Ac	3.54 ± 0.31^Ad
100	4.98 ± 0.14^Aa	3.83 ± 0.16^Bc	5.60 ± 0.42^Ad	5.48 ± 0.34^Aa	3.98 ± 0.47^Ba	2.73 ± 0.23^Ca	5.16 ± 0.25^Aab	5.72 ± 0.25^Ab	4.75 ± 0.16^Ac
300	4.65 ± 0.41^Ba	5.23 ± 0.11^Bb	7.36 ± 0.45^Ac	5.78 ± 0.31^Aa	3.84 ± 0.19^Ba	2.86 ± 0.07^Ca	5.30 ± 0.74^Aab	5.77 ± 0.33^Ab	5.66 ± 0.24^Abc
500	5.31 ± 0.67^Ca	6.78 ± 0.16^Ba	9.00 ± 0.21^Ab	5.33 ± 0.29^Aa	3.98 ± 0.32^Ba	3.24 ± 0.32^Ba	5.86 ± 0.37^Aa	5.70 ± 0.19^Ab	5.85 ± 0.42^Ab
700	5.28 ± 0.27^Ca	7.79 ± 0.63^Babc	11.39 ± 0.31^Aa	5.88 ± 0.16^Aa	4.32 ± 0.22^Aa	4.47 ± 0.60^Aa	6.19 ± 0.28^Aa	7.20 ± 0.57^Aa	7.90 ± 0.32^Aa

P处理 P treatment (mg·kg^-1)	向日葵 Helianthus annuus			苏丹草 Sorghum sudanense			南瓜 Cucurbita moschata
P处理 P treatment (mg·kg^-1)	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks
0	1.81 ± 0.15^Aa	1.61 ± 0.16^Aa	1.85 ± 0.20^Ac	3.03 ± 0.41^Aa	2.14 ± 0.17^ABa	1.85 ± 0.12^Bc	0.84 ± 0.15^Aa	0.85 ± 0.08^Aa	0.86 ± 0.04^Aa
100	2.18 ± 0.21^Aa	1.75 ± 0.12^Aa	2.55 ± 0.24^Abc	2.90 ± 0.15^Aa	2.07 ± 0.19^Ba	2.08 ± 0.22^Bbc	1.67 ± 0.24^Aa	1.15 ± 0.11^ABa	0.87 ± 0.04^Ba
300	2.30 ± 0.27^Aa	2.28 ± 0.15^Aa	2.56 ± 0.19^Abc	3.39 ± 0.34^Aa	2.16 ± 0.20^Ba	2.10 ± 0.11^Bbc	1.61 ± 0.52^Aa	1.01 ± 0.14^Aa	1.00 ± 0.06^Aa
500	1.65 ± 0.25^Aa	2.01 ± 0.04^Aa	3.05 ± 0.33^Ab	3.44 ± 0.35^Aa	2.15 ± 0.22^Ba	2.46 ± 0.12^Bab	1.69 ± 0.63^Aa	0.88 ± 0.09^Aa	0.95 ± 0.09^Aa
700	1.86 ± 0.14^Ba	2.43 ± 0.41^Ba	4.09 ± 0.30^Aa	3.54 ± 0.15^Aa	2.35 ± 0.14^Ca	2.92 ± 0.15^Ba	1.82 ± 0.36^Aa	0.71 ± 0.05^Ba	0.95 ± 0.04^Ba