Drought Stress Alleviation by Potassium-Nitrate-Containing Chitosan/Montmorillonite Microparticles Confers Changes in Spinacia oleracea L.

被引:36
作者
Bukhari, Syed Abu Bakr Haider [1 ]
Lalarukh, Irfana [2 ]
Amjad, Syeda Fasiha [1 ]
Mansoora, Nida [1 ]
Naz, Maliha [1 ]
Naeem, Muhammad [3 ]
Bukhari, Syeda Aqsa [4 ]
Shahbaz, Muhammad [1 ]
Ali, Saleha Ahmad [5 ]
Marfo, Theodore Danso [6 ]
Danish, Subhan [7 ]
Datta, Rahul [8 ]
Fahad, Shah [9 ]
机构
[1] Univ Agr Faisalabad, Dept Bot, Faisalabad 38000, Pakistan
[2] Govt Coll Woman Univ, Dept Bot, Faisalabad 38000, Pakistan
[3] Hebei Normal Univ, Coll Life Sci, Shijiazhuang 050016, Hebei, Peoples R China
[4] Univ Sargodha, Dept Chem, Sargodha 40100, Pakistan
[5] Univ Lahore, Dept Bot, Lahore 54590, Pakistan
[6] Cape Coast Tech Univ, Dept Environm Management Technol, POB DL 50, Cape Coast, Ghana
[7] Bahauddin Zakariya Univ, Fac Agr Sci & Technol, Dept Soil Sci, Multan 60800, Pakistan
[8] Mendel Univ Brno, Fac Forestry & Wood Technol, Dept Geol & Pedol, Brno 61300, Czech Republic
[9] Univ Haripur, Dept Agron, Haripur 22620, Pakistan
关键词
osmotic stress; mineral fertilizer; soil mineral; antioxidants; growth attributes; spinach; ACC-DEAMINASE; GROWTH; MITIGATION; SALINITY; WHEAT; RHIZOBACTERIA; INOCULATION; TOLERANCE; BACTERIA; BIOCHAR;
D O I
10.3390/su13179903
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Drought and low amounts of mineral nutrients in the soil are the two leading global constraints in arid and semiarid regions. Their detrimental effects on soils and crops can be alleviated by applying controlled release and biodegradable fertilizers to better and sustain the crops. On a global scale, spinach (Spinacia oleracea L.) is an essential leafy green vegetable that is biologically considered a reliable source of essential nutrients and minerals for human health. A comprehensive approach is needed to manage water stress to mitigate the impacts of stress-caused damage and to examine this for better and increased plant production. An experiment was conducted using potassium-nitrate-containing chitosan/montmorillonite microparticles (150 mg) under mild and severe drought stress (MDS: 50% and SDS: 35% FC, respectively). The treatments include control (no KNO3 and 70% FC as normal irrigation (NI)), KNO3 + NI, 50% FC as mild drought stress (MDS), KNO3 + MDS, 35% FC as severe drought stress (SDS) and KNO3 + SDS. Results revealed that drought stress decreased all studied physiological parameters and increased oxidative stress indicators in spinach. Applying KN significantly increased root (122%) and shoot length (4%), shoot fresh weight (32%) and shoot dry weight (71%), chlorophyll a (88%), carotenoids (39%), total soluble proteins (50%), soluble sugars (51%), potassium (80%), and phosphorous (32%) concentrations over No KN at severe drought. While stress indicators, like glycine betaine, malondialdehyde, hydrogen peroxide, electrolyte leakage, peroxidase, superoxide dismutase, and ascorbic acid levels, were increased in stress. Treatment KN was proved efficient and effective in improving spinach physiological status in both MDS and SDS.
引用
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页数:15
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