TY - JOUR
T1 - Phytomanagement of heavy metals in contaminated soils using sunflower
T2 - A review
AU - Rizwan, Muhammad
AU - Ali, Shafaqat
AU - Rizvi, Hina
AU - Rinklebe, Jörg
AU - Tsang, Daniel C.W.
AU - Meers, Erik
AU - Ok, Yong Sik
AU - Ishaque, Wajid
N1 - Funding Information:
Acknowl edgments. This work was supported by the Program Excell ent Talent s i n t he University of Henan Province, search Fund for the Doctoral Program of Higher Education Science Foundation of Henan Province.
Publisher Copyright:
© 2016 Taylor & Francis Group, LLC.
PY - 2016/9/16
Y1 - 2016/9/16
N2 - Contamination of soils with heavy metals (HMs) is an important issue due to the contamination of agricultural crops, which are further transferred into the food chain. Phytoremediation is an emerging method of remediating metal-contaminated soils. Sunflower has been widely adopted for phytomanagement of HM-contaminated soils owing to its high biomass production and capacity for metal accumulation. Sunflowers can tolerate the toxic effects of certain HMs through different mechanisms, such as enhancements in antioxidant enzyme activities, deposition in nonactive parts of the plant, and stimulation of osmolytes. Stress caused by HMs affected negatively the seed germination, nutritional status, photosynthesis, and growth of sunflower. However, the responses of sunflowers to this stress vary with cultivar/variety, soil type, metal type, dose, and duration of metal exposure. This review critically summarizes the effects of HMs in sunflowers and examines field-relevant approaches to improve the phytoextraction capability of sunflowers. Proper selection of tolerant cultivars along with agronomic practices may be an effective strategy for the phytomanagement of soils contaminated with HMs.
AB - Contamination of soils with heavy metals (HMs) is an important issue due to the contamination of agricultural crops, which are further transferred into the food chain. Phytoremediation is an emerging method of remediating metal-contaminated soils. Sunflower has been widely adopted for phytomanagement of HM-contaminated soils owing to its high biomass production and capacity for metal accumulation. Sunflowers can tolerate the toxic effects of certain HMs through different mechanisms, such as enhancements in antioxidant enzyme activities, deposition in nonactive parts of the plant, and stimulation of osmolytes. Stress caused by HMs affected negatively the seed germination, nutritional status, photosynthesis, and growth of sunflower. However, the responses of sunflowers to this stress vary with cultivar/variety, soil type, metal type, dose, and duration of metal exposure. This review critically summarizes the effects of HMs in sunflowers and examines field-relevant approaches to improve the phytoextraction capability of sunflowers. Proper selection of tolerant cultivars along with agronomic practices may be an effective strategy for the phytomanagement of soils contaminated with HMs.
KW - Chelating agents
KW - heavy metal tolerance
KW - phytoremediation
KW - plant growth regulators
UR - http://www.scopus.com/inward/record.url?scp=84994807282&partnerID=8YFLogxK
U2 - 10.1080/10643389.2016.1248199
DO - 10.1080/10643389.2016.1248199
M3 - Review article
AN - SCOPUS:84994807282
VL - 46
SP - 1498
EP - 1528
JO - Critical Reviews in Environmental Science and Technology
JF - Critical Reviews in Environmental Science and Technology
SN - 1064-3389
IS - 18
ER -