Ahmad Chaudhry Ali, Haider Muhammad Saleem, Akhter Adnan
Faculty of Agricultural Sciences, Department of Plant Pathology, University of the Punjab, Quaid-e-Azam Campus, PO Box 54590, Lahore, Pakistan.
R Soc Open Sci. 2023 Aug 9;10(8):230442. doi: 10.1098/rsos.230442. eCollection 2023 Aug.
The abrupt variation in climatic patterns has become a global concern in terms of food security. Biochar, known to ameliorate climatic adversities by sequestering carbon and activating systemic resistance pathways in plants, has become increasingly relevant. Therefore, the study was aimed to characterize leaf waste biochar (LWB) by Fourier-transform infrared spectroscopy, scanning electron microscopy with energy dispersive X-ray (SEM-EDX) and X-ray diffraction analytical techniques as well as determination of its impact on the development of bacterial wilt (BW) in eggplant () caused by (RS). The effect of LWB on the physiology and defence-associated biochemistry of eggplants was investigated thoroughly. Eggplants either inoculated (+RS) or uninoculated (-RS) were cultivated in potting mixture containing 3 and 6% (v/v) LWB separately. In comparison with substrate (soil only), percentage disease index was significantly reduced (71%) in plants grown in 6% LWB-amended treatments. Biochar-induced increase in level of total chlorophyll content as well as in biochemicals such as phenolics, flavonoids and peroxidases were evident on plants in terms of resistance response against BW. Moreover, biochar also significantly affected the level of NPK in the eggplants. In conclusion, biochar-triggered biochemical alterations played a pivotal role in the management of BW along with the curing of the disease-infested soils.
气候模式的突然变化已成为全球粮食安全方面的一个关注点。生物炭因能通过固碳和激活植物的系统抗性途径来缓解气候逆境而变得越发重要。因此，本研究旨在通过傅里叶变换红外光谱、带能谱仪的扫描电子显微镜（SEM-EDX）和X射线衍射分析技术对叶废料生物炭（LWB）进行表征，并测定其对由青枯雷尔氏菌（RS）引起的茄子青枯病（BW）发展的影响。全面研究了LWB对茄子生理和防御相关生物化学的影响。将接种（+RS）或未接种（-RS）的茄子分别种植在含有3%和6%（v/v）LWB的盆栽混合物中。与基质（仅土壤）相比，在6% LWB改良处理中生长的植株病害指数显著降低（71%）。就对青枯病的抗性反应而言，生物炭诱导的总叶绿素含量以及酚类、黄酮类和过氧化物酶等生物化学物质水平的增加在植株上很明显。此外，生物炭还显著影响了茄子中氮磷钾的水平。总之，生物炭引发的生化变化在青枯病的治理以及病害侵染土壤的修复中发挥了关键作用。
