Sonnenberg Anton S M, Nayan Nazri, Cone John W, van Peer Arend F
Plant Breeding, Wageningen University & Research, 6708 PB Wageningen, The Netherlands.
Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400 UPM, Malaysia.
J Fungi (Basel). 2024 Dec 11;10(12):858. doi: 10.3390/jof10120858.
The aim of fungal treatment of organic matter for ruminants is the improvement of its degradability. So far, such treatment appears to be time-consuming and improvement has been modest. In previous work, we observed within three white rot species that there is modest () or low ( and ) variation in fiber degradation in wheat straw during seven weeks of incubation. By extending and re-examining the data from all three species, we see that strains of show the largest variation and improvement in the degradability of treated wheat straw. In addition, also generated the highest absolute amount of degradable organic matter, a parameter not calculated before, but is very relevant for the economic feasibility of fungal treatment. In estimating fungal growth, we found no good correlation between an increase in ergosterol and a decrease in plant biomass, indicating a variation within fungal species of the ergosterol/fungal biomass ratio and/or a variation in carbon use efficiency, which has also not been analyzed before. This work contributes to the knowledge of how fungi degrade lignocellulose and further specifies what can be targeted for breeding to make fungal pretreatment economically feasible for upgrading organic waste streams into ruminal feed.
反刍动物有机物真菌处理的目的是提高其降解性。到目前为止，这种处理似乎耗时且改进程度有限。在之前的工作中，我们观察到在三种白腐菌中，在七周的培养期内，小麦秸秆纤维降解存在适度（）或较低（和）变化。通过扩展和重新审视来自所有三种菌种的数据，我们发现菌种的菌株在处理过的小麦秸秆降解性方面表现出最大的变化和改进。此外，还产生了最高的可降解有机物绝对量，这是一个之前未计算的参数，但对于真菌处理的经济可行性非常重要。在估计真菌生长时，我们发现麦角固醇增加与植物生物量减少之间没有良好的相关性，这表明真菌物种内麦角固醇/真菌生物量比率存在变化和/或碳利用效率存在变化，这也是之前未分析过的。这项工作有助于了解真菌如何降解木质纤维素，并进一步明确可用于育种的目标，以使真菌预处理在经济上可行，将有机废物流升级为瘤胃饲料。
