Role of mineral nutrition in alleviation of heat stress in cotton plants grown in glasshouse and field conditions
Muhammad Sarwar,Muhammad Farrukh Saleem,Najeeb Ullah,Shafaqat Ali,Muhammad Rizwan,Muhammad Rizwan Shahid,Mohammed Nasser Alyemeni,Saud Alamri,Parvaiz Ahmad,Parvaiz Ahmad +9 more
TLDR
Conclusively, increasing intensities of temperature adversely affected the recorded responses of cotton and exogenous application of Zn efficaciously alleviated heat induced perturbations.Abstract:
Coincidence of high temperature with terminal reproductive pheno-stages of cotton is chief constraint to achieve yield potential. This high temperature interfere plant defensive system, physiological process, water relations and lint yield production. In this study, we modulated the detrimental outcomes of heat stress on cotton through the foliar spray of nutrients. Cotton crop was exposed to sub-optimal and supra-optimal thermal regimes for a period of one week at squaring, flowering and boll formation stages under glass house and field conditions. Foliar spray of potassium (K-1.5%), zinc (Zn-0.2%) and boron (B-0.1%) were applied at three reproductive stages one day prior to expose high temperature regimes. High temperature increased lipid membrane damage through increased malondialdehyde (MDA) contents in cotton leaves. High temperature stress also reduced leaf chlorophyll contents, net photosynthetic rate, stomatal conductance, water potential, averaged boll weight (g) and seed cotton yield per plant. Various nutrients variably influenced growth and physiology of heat-stressed cotton plants. Zinc outclassed all other nutrients in increasing leaf SOD, CAT, POX, AsA, TPC activity, chlorophyll contents, net photosynthetic rate, stomatal conductance, water potential, boll weight and seed cotton yield per plant. For example, zinc improved seed cotton yield under supra-optimal thermal regime by 17% and under sub-optimal thermal regime by 12% of glasshouse study while 19% under high temperature sowing dates of field study than the water treated plants under the same temperatures. Conclusively, increasing intensities of temperature adversely affected the recorded responses of cotton and exogenous application of Zn efficaciously alleviated heat induced perturbations. Moreover, exogenous nutrients mediated upregulations in physiochemical attributes induced heat tolerance at morphological level.read more
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Plant heat stress: Concepts directing future research
TL;DR: In this paper, the authors provide insights into key research gaps in plant heat stress and provide suggestions on addressing these gaps to enhance heat stress resilience in plants, particularly understudied stages such as floral meristem initiation and development.
Journal ArticleDOI
Potassium in plants: Growth regulation, signaling, and environmental stress tolerance.
Riya T. Johnson,Kanchan Lata Vishwakarma,Md. Shahadat Hossen,Vinod Kumar,A. Shackira,Jos T. Puthur,Gholamreza Abdi,Mohammad Sarraf,Mirza Hasanuzzaman +8 more
TL;DR: In this article , a review of the physiological functions of K in plants like stomatal regulation, photosynthesis and water uptake is presented, along with its role in detoxification of reactive oxygen species and in conferring tolerance to plants against abiotic stresses.
Journal ArticleDOI
Review of oxidative stress and antioxidative defense mechanisms in Gossypium hirsutum L. in response to extreme abiotic conditions
Zainab Qamer,Muhammad Tanees Chaudhary,Xiongming Du,Lori L. Hinze,Muhammad Tehseen Azhar,Muhammad Tehseen Azhar +5 more
TL;DR: In this article, the authors summarized the processes involved in reactive oxygen species (ROS) production in response to several types of abiotic stress in cotton plants and discussed the achievements in understanding and improving oxidative stress tolerance in cotton.
Journal ArticleDOI
Unraveling Heat Tolerance in Upland Cotton (Gossypium hirsutum L.) Using Univariate and Multivariate Analysis
Muhammad Zafar,Xuesi Jia,Amir Shakeel,Zareen Sarfraz,Abdul Manan,Ali Imran,Huijuan Mo,Arfan Ali,Yuan Youlu,Abdul Razzaq,Muhammad Iqbal,Maozhi Ren +11 more
TL;DR: In this paper , the authors evaluated eight parental lines (five lines and three testers) and their 15 F1 hybrids under normal and high-temperature stress to assess the impact of these conditions over 2 consecutive years.
Journal ArticleDOI
Foliar nutrition: potential and challenges under multifaceted agriculture
Muhammad Ashfaq,Aysha Kiran,Hafeez ur Rehman,Muhammad Umar Farooq,Naseem Hassan Ijaz,Faisal Nadeem,Imran Azeem,Xuexian Steve Li,Abdul Wakeel +8 more
TL;DR: In this article , the potential of foliar fertilization in improving crop yield and quality under environmental stresses has been evaluated based on a meta-analysis, which showed that foliar-applied fertilizers showed higher crop plants yield, and quality traits by 15-19% and 9-29%, respectively, under different environmental stresses.
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