Tiwari Rahul Kumar, Lal Milan Kumar, Kumar Ravinder, Mangal Vikas, Kumar Awadhesh, Kumar Rakesh, Sharma Sanjeev, Sagar Vinay, Singh Brajesh
Division of Plant Protection, ICAR-Central Potato Research Institute, Shimla, HP 171001, India.
Division of Crop Protection, ICAR-Indian Institute of Sugarcane Research, Lucknow, Uttar Pradesh 226002, India.
Heliyon. 2024 Feb 20;10(4):e26718. doi: 10.1016/j.heliyon.2024.e26718. eCollection 2024 Feb 29.
Soil salinity has emerged as a critical abiotic stress in potato production, whereas wilt disease, caused by is the significant biotic stress. An experiment was performed to decipher the occurrence of wilt incidence by . FJ1 under the influence of salinity in both and pot culture conditions. High salt concentration negatively influenced root and shoot development in the variety "Kufri Jyoti" but positively affected the mycelial growth and sporulation behaviours of . FJ1. There was abundant whitish mycelial growth with enhanced biomass and high sporulation (microconidia production) in . FJ1 cultured on salt-supplemented media. Moreover, under high salinity conditions (EC 2-8 dS m), severe wilting and rotting of vascular bundles were observed in plants artificially inoculated with . FJ1. The mortality rate of potato plants was significantly higher under individual and combined stresses as compared to control. The wilt index of individual and combined stressed plants was also substantially higher compared to the control. Additionally, compared to the control, there was a significant decrease in total chlorophyll content and membrane stability index of the leaves under combined stress. However, the total phenols were increased under stress conditions. The total sugar content of potato plants decreased in infected plants, but increased when exposed to salt stress or a combination of salt stress and pathogen infection. . infection also increased the activity of peroxidase (POX) and decreased the activity of phenylalanine ammonia-lyase (PAL) and catalase (CAT). These results suggest that wilt and dry rot will be a more severe disease for potato cultivation in saline soils.
土壤盐渍化已成为马铃薯生产中的一个关键非生物胁迫因素，而由[病原体名称未给出]引起的枯萎病则是重要的生物胁迫因素。进行了一项实验，以解读在[未提及具体因素]影响下，FJ1在水培和盆栽条件下枯萎病的发病情况。高盐浓度对“库弗里·乔蒂”品种的根和地上部生长产生负面影响，但对FJ1的菌丝生长和产孢行为有积极影响。在添加盐分的培养基上培养的FJ1有大量白色菌丝生长，生物量增加且产孢量高（产生微分生孢子）。此外，在高盐度条件下（电导率2 - 8 dS m），人工接种FJ1的植株出现严重萎蔫和维管束腐烂。与对照相比，马铃薯植株在单一胁迫和复合胁迫下的死亡率显著更高。单一胁迫和复合胁迫植株的枯萎指数也显著高于对照。此外，与对照相比，复合胁迫下叶片的总叶绿素含量和膜稳定性指数显著降低。然而，胁迫条件下总酚含量增加。感染病害的马铃薯植株总糖含量下降，但在盐胁迫或盐胁迫与病原体感染复合胁迫下总糖含量增加。[病原体名称未给出]感染还增加了过氧化物酶（POX）的活性，降低了苯丙氨酸解氨酶（PAL）和过氧化氢酶（CAT）的活性。这些结果表明，在盐渍土壤中种植马铃薯时，[病原体名称未给出]枯萎病和干腐病将成为更严重的病害。
