title: Soil Potassium Deficiency Reduces Cotton Fiber Strength by Accelerating and Shortening Fiber Development.
abstract: Low potassium (K)-induced premature senescence in cotton has been observed worldwide, but how it affects cotton fiber properties remain unclear. We hypothesized that K deficiency affects cotton fiber properties by causing disordered fiber development, which may in turn be caused by the induction of a carbohydrate acquisition difficulty. To investigate this issue, we employed a low-K-sensitive cotton cultivar Siza 3 and a low-K-tolerant cultivar Simian 3 and planted them in three regions of different K supply. Data concerning lint yield, Pn and main fiber properties were collected from three years of testing. Soil K deficiency significantly accelerated fiber cellulose accumulation and dehydration processes, which, together with previous findings, suggests that the low-K induced carbohydrate acquisition difficulty could cause disordered fiber development by stimulating the expression of functional proteins such as CDKA (cyclin-dependent kinase). As a result, fiber strength and lint weight were reduced by up to 7.8% and 2.1%, respectively. Additional quantitative analysis revealed that the degree of accelerated fiber development negatively correlated with fiber strength. According to the results of this study, it is feasible to address the effects of soil K deficiency on fiber properties using existing cultivation strategies to prevent premature senescence of cotton plants.
authors.affiliation: Key Laboratory of Crop Physiology &Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China.
authors.forename: Jia-Shuo
authors.initials: JS
authors.lastname: Yang
authors.affiliation: Key Laboratory of Crop Physiology &Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Hu
authors.affiliation: Key Laboratory of Crop Physiology &Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China.
authors.forename: Wenqing
authors.initials: W
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Crop Physiology &Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China.
authors.forename: Yali
authors.initials: Y
authors.lastname: Meng
authors.affiliation: Key Laboratory of Crop Physiology &Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China.
authors.forename: Binglin
authors.initials: B
authors.lastname: Chen
authors.affiliation: Key Laboratory of Crop Physiology &Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China.
authors.forename: Youhua
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of Crop Physiology &Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China.
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Zhou
mesh_terms: D050260:Carbohydrate Metabolism / Q000187:drug effects; D032561:Cotton Fiber / Q000592:standards*; D018844:Cyclin-Dependent Kinases / Q000378:metabolism; D005308:Fertilizers; D003368:Gossypium / Q000145:classification / Q000187:drug effects / Q000254:growth & development*; D018515:Plant Leaves / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D010940:Plant Proteins / Q000378:metabolism; D011188:Potassium / Q000378:metabolism* / Q000494:pharmacology; D012987:Soil / Q000737:chemistry*; D013045:Species Specificity; D013997:Time Factors
chemical_list: D005308:Fertilizers; D010940:Plant Proteins; D012987:Soil; D018844:Cyclin-Dependent Kinases; D011188:Potassium