Evaluation for phosphorus accumulation and removal capability of nine species in the Polygonaceae to excavate amphibious superstars used for phosphorus-phytoextraction
Evaluation for phosphorus accumulation and removal capability of nine species in the Polygonaceae to excavate amphibious superstars used for phosphorus-phytoextraction
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DOI：
10.1016/j.chemosphere.2022.136361
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发表时间：
2022-09-18
期刊：
影响因子：
8.8
通讯作者：
Li，Tingxuan
中科院分区：
文献类型：
--
作者：
Ye，Daihua;Xie，Min;Li，Tingxuan
减少土壤和富营养化水体中过量的磷(P)是实现环境磷平衡的重要途径，而利用生物量和吸收量大的两栖植物提取P是一种很好的方法，如已报道的聚积P的植物蓼。然而，目前尚不清楚蓼科植物中高耐磷和高磷积累的分布情况，以及是否有新的两栖超级明星用于提取磷植物。以6种蓼属植物和3种非蓼属植物为研究对象，比较了不同磷处理在水培和土壤中的磷积累和去除能力。在高磷水培条件下，除f外，其他树种均表现出生长优势和磷积累优势，且无磷毒性。野蔷薇。在高磷土壤中，所有物种在8周时均表现出较好的生长表现，叶片为绿色，茎部生物量为3.60 ~ 29.49 g plant−1。8周时，高磷土壤下蓼属植物的茎部磷积累量（31.32 ~ 152.37 mg株- 1）、磷提取率（3.16% ~ 15.36%）、最大潜在磷去除量（13.89 ~ 67.59 kg ha - 1）明显高于非蓼属植物，而植株有效数量（7 ~ 32）明显低于非蓼属植物。此外,P。lapathifolium, P。divaricatumandP。在水培条件下，东洋在磷浓度大于10 mg g-1干重的生长中居前3位，在高磷土壤的磷积累和磷去除方面具有优势。通过聚类分析，得出P。天青花总是被分成一个类，而p。divaricatumandP。东方人更可能聚集在一起。因此p。lapathifolium, P。divaricatumandP。东方英属植物耐高磷，在高磷水体和土壤中积累和去除磷的能力较强，可作为植物提取磷，特别是磷的新水陆超级明星。lapathifolium。
Reducing excessive phosphorus (P) from both soils and eutrophic waters is attractive to achieve environmental P balance, and P-phytoextraction by amphibious plants with great biomass and P uptake is an amazing method, as already reported for P-accumulating plant, Polygonum hydropiper. However, it is still unknown how widespread high P tolerance and great P accumulation is among species in the Polygonaceae, and if there are new amphibious superstars used for P-phytoextraction. We used sixPolygonumspecies and three non-Polygonumspecies to compare P accumulation and removal capability in hydroponics and soils with different P treatments. In high P hydroponics, all species showed superiority in growth and P accumulation without P toxicity, except forF. multiflora. In high P soils, all species showed much better growth performance with green leaves at 8 weeks, with shoot biomass being 3.60–29.49 g plant−1. At 8 weeks,Polygonumspecies displayed obviously higher shoot P accumulation (31.32–152.37 mg plant−1), P extraction ratio (3.16%–15.36%), maximum potential P removal (13.89–67.59 kg ha−1), and much lower plant effective number (7-32) than non-Polygonumspecies under high P soils. Besides,P. lapathifolium,P. divaricatumandP. orientaleranked the top three in growth with P concentration more than 10 mg g-1dry weight in hydroponics and showed dominant advantage in P accumulation and P removal from high P soils. Through the cluster analysis,P. lapathifoliumwas always separated into a class, andP. divaricatumandP. orientalemore likely clustered together. It is therefore thatP. lapathifolium,P. divaricatumandP. orientaleare tolerant to high P and attractive in P accumulation and P removal from high P waters and soils, and thus can be used as new amphibious superstars for P-phytoextraction, particularlyP. lapathifolium.