scholarly journals Genotypic Variation in Nickel Accumulation and Translocation and Its Relationships with Silicon, Phosphorus, Iron, and Manganese among 72 Major Rice Cultivars from Jiangsu Province, China

2019 ◽  
Vol 16 (18) ◽  
pp. 3281
Author(s):  
Ya Wang ◽  
Chengqiao Shi ◽  
Kang Lv ◽  
Youqing Li ◽  
Jinjin Cheng ◽  
...  
Keyword(s):  
Genotypic Variation ◽  
Jiangsu Province ◽  
Rice Cultivars ◽  
Phosphorus Iron ◽  
Nickel Accumulation ◽  
Translocation Factors ◽  
Hydroponic Conditions ◽  
Ni Accumulation ◽  
Uptake And Transport ◽  
Iron And Manganese

Nickel (Ni) is a ubiquitous environmental toxicant and carcinogen, and rice is a major dietary source of Ni for the Chinese population. Recently, strategies to decrease Ni accumulation in rice have received considerable attention. This study investigated the variation in Ni accumulation and translocation, and also multi-element (silicon (Si), phosphorus (P), iron (Fe), and manganese (Mn)) uptake and transport among 72 rice cultivars from Jiangsu Province, China, that were grown under hydroponic conditions. Our results showed a 2.2-, 4.2-, and 5.3-fold variation in shoot Ni concentrations, root Ni concentrations, and translocation factors (TFs) among cultivars, respectively. This suggests that Ni accumulation and translocation are significantly influenced by the genotypes of the different rice cultivars. Redundancy analysis of the 72 cultivars revealed that the uptake and transport of Ni were more similar to those of Si and Fe than to those of P and Mn. The Ni TFs of high-Ni cultivars were significantly greater than those of low-Ni cultivars (p < 0.001). However, there were no significant differences in root Ni concentrations of low-Ni and high-Ni cultivars, suggesting that high-Ni cultivars could translocate Ni to shoots more effectively than low-Ni cultivars. In addition, the cultivars HD8 and YD8 exhibited significantly lower levels of Ni accumulation than their parents (p < 0.05). Our results suggest that breeding can be an effective strategy for mitigating excessive Ni accumulation in rice grown in Ni-contaminated environments.

scholarly journals Genotypic Variation in Nitrogen Uptake during Early Growth among Rice Cultivars under Different Soil Moisture Regimes

2013 ◽  
Vol 16 (3) ◽  
pp. 238-246 ◽  
Author(s):  
Maya Matsunami ◽  
Toshinori Matsunami ◽  
Kazuhiro Kon ◽  
Atsushi Ogawa ◽  
Ikuko Kodama ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Nitrogen Uptake ◽  
Genotypic Variation ◽  
Early Growth ◽  
Rice Cultivars ◽  
Moisture Regimes

scholarly journals Biofortification of Diverse Basmati Rice Cultivars with Iodine, Selenium, and Zinc by Individual and Cocktail Spray of Micronutrients

Agronomy ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 49
Author(s):  
Asif Naeem ◽  
Muhammad Aslam ◽  
Mumtaz Ahmad ◽  
Muhammad Asif ◽  
Mustafa Atilla Yazici ◽  
...  
Keyword(s):  
Grain Yield ◽  
Foliar Application ◽  
Genotypic Variation ◽  
Foliar Spray ◽  
Brown Rice ◽  
Basmati Rice ◽  
Sodium Selenate ◽  
Human Populations ◽  
Rice Grain ◽  
Rice Cultivars

Given that an effective combined foliar application of iodine (I), selenium (Se), and zinc (Zn) would be farmer friendly, compared to a separate spray of each micronutrient, for the simultaneous biofortification of grain crops, we compared effectiveness of foliar-applied potassium iodate (KIO3, 0.05%), sodium selenate (Na2SeO4, 0.0024%), and zinc sulfate (ZnSO4∙7H2O, 0.5%), separately and in their combination (as cocktail) for the micronutrient biofortification of four Basmati cultivars of rice (Oryza sativa L.). Foliar-applied, each micronutrient or their cocktail did not affect rice grain yield, but grain yield varied significantly among rice cultivars. Irrespective of foliar treatments, the brown rice of cv. Super Basmati and cv. Kisan Basmati had substantially higher concentration of micronutrients than cv. Basmati-515 and cv. Chenab Basmati. With foliar-applied KIO3, alone or in cocktail, the I concentration in brown rice increased from 12 to 186 µg kg−1. The average I concentration in brown rice with foliar-applied KIO3 or cocktail was 126 μg kg−1 in cv. Basmati-515, 160 μg kg−1 in cv. Chenab Basmati, 153 μg kg−1 in cv. Kisan Basmati, and 306 μg kg−1 in cv. Super Basmati. Selenium concentration in brown rice increased from 54 to 760 µg kg−1, with foliar-applied Na2SeO4 individually and in cocktail, respectively. The inherent Zn concentration in rice cultivars ranged between 14 and 19 mg kg−1 and increased by 5–6 mg Zn per kg grains by foliar application of ZnSO4∙7H2O and cocktail. The results also showed the existence of genotypic variation in response to foliar spray of micronutrients and demonstrated that a foliar-applied cocktail of I, Se, and Zn could be an effective strategy for the simultaneous biofortification of rice grains with these micronutrients to address the hidden hunger problem in human populations.

scholarly journals Tolerance of Iron-Deficient and -Toxic Soil Conditions in Rice

Plants ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 31 ◽  
Author(s):  
Anumalla Mahender ◽  
B. Swamy ◽  
Annamalai Anandan ◽  
Jauhar Ali
Keyword(s):  
Fine Tuning ◽  
Fe Deficiency ◽  
Soil Conditions ◽  
Rice Cultivars ◽  
Rice Varieties ◽  
Genetic Traits ◽  
The Past ◽  
Iron Deficient ◽  
Fe Toxicity ◽  
Uptake And Transport

Iron (Fe) deficiency and toxicity are the most widely prevalent soil-related micronutrient disorders in rice (Oryza sativa L.). Progress in rice cultivars with improved tolerance has been hampered by a poor understanding of Fe availability in the soil, the transportation mechanism, and associated genetic factors for the tolerance of Fe toxicity soil (FTS) or Fe deficiency soil (FDS) conditions. In the past, through conventional breeding approaches, rice varieties were developed especially suitable for low- and high-pH soils, which indirectly helped the varieties to tolerate FTS and FDS conditions. Rice-Fe interactions in the external environment of soil, internal homeostasis, and transportation have been studied extensively in the past few decades. However, the molecular and physiological mechanisms of Fe uptake and transport need to be characterized in response to the tolerance of morpho-physiological traits under Fe-toxic and -deficient soil conditions, and these traits need to be well integrated into breeding programs. A deeper understanding of the several factors that influence Fe absorption, uptake, and transport from soil to root and above-ground organs under FDS and FTS is needed to develop tolerant rice cultivars with improved grain yield. Therefore, the objective of this review paper is to congregate the different phenotypic screening methodologies for prospecting tolerant rice varieties and their responsible genetic traits, and Fe homeostasis related to all the known quantitative trait loci (QTLs), genes, and transporters, which could offer enormous information to rice breeders and biotechnologists to develop rice cultivars tolerant of Fe toxicity or deficiency. The mechanism of Fe regulation and transport from soil to grain needs to be understood in a systematic manner along with the cascade of metabolomics steps that are involved in the development of rice varieties tolerant of FTS and FDS. Therefore, the integration of breeding with advanced genome sequencing and omics technologies allows for the fine-tuning of tolerant genotypes on the basis of molecular genetics, and the further identification of novel genes and transporters that are related to Fe regulation from FTS and FDS conditions is incredibly important to achieve further success in this aspect.

Genotypic variation among 20 rice cultivars/landraces in response to cadmium stress grown locally in West Bengal, India

2020 ◽  
Vol 148 ◽  
pp. 193-206 ◽  
Author(s):  
Falguni Barman ◽  
Snehalata Majumdar ◽  
Shahira Helal Arzoo ◽  
Rita Kundu
Keyword(s):  
West Bengal ◽  
Genotypic Variation ◽  
Cadmium Stress ◽  
Rice Cultivars

scholarly journals Hydroponic Phytoremediation of Ni, Co, and Pb by Iris Sibirica L.

2021 ◽  
Vol 13 (16) ◽  
pp. 9400
Author(s):  
Shuming Wan ◽  
Jun Pang ◽  
Yiwei Li ◽  
Yanping Li ◽  
Jia Zhu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
High Stress ◽  
Wetland Plant ◽  
Bioconcentration Factors ◽  
Metal Mine ◽  
Plant Shoots ◽  
Translocation Factors ◽  
Hydroponic Conditions

Heavy metal pollution in mine wastelands is quite severe. Iris sibirica L., an emergent wetland plant, is characterized by an ability to survive under high stress of heavy metals. This study aimed to explore the phytoremediation ability of nickel (Ni), cobalt (Co), and lead (Pb) by Iris sibirica L. under hydroponic conditions. A series of tests were conducted at different metal stress conditions to evaluate the phytoextraction and tolerance of Iris sibirica L. The concentrations of Ni, Co, and Pb in plant shoots reached their highest values in 500 mg L−1 treatments, where they were 6.55%, 23.64%, and 79.24% higher than those in 300 mg L−1, respectively. The same concentrations in roots also reached their peak in 500 mg L−1 treatments, where they were 5.52%, 33.02%, and 70.15% higher than those in 300 mg L−1, respectively. Bioconcentration factors (BCF) for Ni, Co, and Pb revealed the phytoextraction ability of Iris sibirica L., and the translocation factors (TCF) showed that Ni may be most easily translocated in the plant, followed by Co and Pb. This study indicates that, compared with Ni and Co, Iris sibirica L. is more suitable for the phytoremediation of Pb-contaminated metal mine wastelands.

Sign in / Sign up

Export Citation Format

Share Document