Alleviation of cadmium toxicity and fortification of zinc in wheat cultivars cultivated in Cd contaminated soil

Dawar, Khadim; Mian, Ishaq Ahmad; Khan, Shadman; Zaman, Anwar; Danish, Subhan; Liu, Ke; Harrison, Matthew Tom; Saud, Shah; Hassan, Shah; Nawaz, Taufiq; Khan, Imran; Liu, Haitao; Khan, Mushtaq Ahmad; Ullah, Sana; Ali, Muhammad Ishtiaq; Jamal, Asif; Zhu, Mo; Khan, Shah Masaud; El-Kahtany, Khaled; Fahad, Shah

doi:10.1016/j.sajb.2023.09.044

Cited by 1 publication

(1 citation statement)

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“…Our study showed that 0.5ECB (composted biochar) had a significant positive impact on key maize growth factors under arsenic stress, effectively mitigating the harmful effects of arsenic contamination [ 72 – 76 ]. Applying 0.5ECB led to a notable decrease in arsenic absorption by maize roots and leaves.…”

Section: Discussionmentioning

confidence: 99%

Unveiling the efficacy of Bacillus faecalis and composted biochar in alleviating arsenic toxicity in maize

Liao,

Ashraf,

Huang

et al. 2024

BMC Plant Biol

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Arsenic (As) contamination is a major environmental pollutant that adversely affects plant physiological processes and can hinder nutrients and water availability. Such conditions ultimately resulted in stunted growth, low yield, and poor plant health. Using rhizobacteria and composted biochar (ECB) can effectively overcome this problem. Rhizobacteria have the potential to enhance plant growth by promoting nutrient uptake, producing growth hormones, and suppressing diseases. Composted biochar can enhance plant growth by improving aeration, water retention, and nutrient cycling. Its porous structure supports beneficial microorganisms, increasing nutrient uptake and resilience to stressors, ultimately boosting yields while sequestering carbon. Therefore, the current study was conducted to investigate the combined effect of previously isolated Bacillus faecalis (B. faecalis) and ECB as amendments on maize cultivated under different As levels (0, 300, 600 mg As/kg soil). Four treatments (control, 0.5% composted biochar (0.5ECB), B. faecalis, and 0.5ECB + B. faecalis) were applied in four replications following a completely randomized design. Results showed that the 0.5ECB + B. faecalis treatment led to a significant rise in maize plant height (~ 99%), shoot length (~ 55%), root length (~ 82%), shoot fresh (~ 87%), and shoot dry weight (~ 96%), root fresh (~ 97%), and dry weight (~ 91%) over the control under 600As stress. There was a notable increase in maize chlorophyll a (~ 99%), chlorophyll b (~ 81%), total chlorophyll (~ 94%), and shoot N, P, and K concentration compared to control under As stress, also showing the potential of 0.5ECB + B. faecalis treatment. Consequently, the findings suggest that applying 0.5ECB + B. faecalis is a strategy for alleviating As stress in maize plants.

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Section: Discussionmentioning

confidence: 99%