https://commons.ru.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 https://commons.ru.ac.za/vital/access/manager/Repository/vital:1163 Wed 30 Mar 2022 14:38:05 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5475 Wed 27 Oct 2021 10:07:08 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1681 Wed 12 May 2021 23:46:38 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1204 Wed 12 May 2021 23:41:16 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3083 Wed 12 May 2021 23:00:39 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3964 0.05]. These results imply that differences in the biosynthetic pathways for biomass accumulation in sibling strains play a significant role in the intraspecific variation observed in pollutant sensitivity, pollutant degradation, and enzyme production. Categorical analysis of intraspecific differences was assessed according to four criterions. These included growth, extracellular peroxidase activities, tolerance to toxic pollutants and the biodegradation of model pollutants. Sibling strains showing the most variable responses in three or more of the selective criterion were recommended for further studies. These strains include P. chrysosporium ME446, BS 2.52, BS 13, BS 17, BS 18, and BS 24. Interestingly, BS 2.52 (a dikaryotic strain generating from the crossing of two haploid progeny) showed significantly lower degradation capabilities than the wildtype parent strain ME446. The inherited variability observed between sibling strains is to be further explored through proteome and transcriptome analysis and genetic linkage studies aimed at describing the mechanisms or pathways conferring tolerance to or degradation of environmental pollutants. In examining fewer organisms at this next level, the number of replicates examined can be increased and thus the power of detection of experimental procedures improved, enabling the detection of multigenic traits amongst genetically related organisms. Growth was shown to play a significant role in the intraspecific differences detected in pollutant sensitivity and degradation between sibling strains. Little is known about the mechanism of growth and differentiation, or the role of differentiation in regulating the lignolytic activity in this organism. The membrane gradostat bioreactor and a unique plug-flow membrane bioreactor were evaluated as novel tools with which to further explore the relationship between secondary metabolism, pollutant degradation and biofilm development in sibling strains. High yield MnP production at levels as high as 1478.8 U.l-1 was achieved using a laboratory scale membrane gradostat bioreactor. Furthermore, extensive mycelial differentiation and tissue formation are reported for P. chrysosporium in both the membrane gradostat bioreactor and plug-flow membrane bioreactor. Intraspecific differences in the extent of this differentiation were observed in strains ME446, BS 13, BS 17 and BS 26 cultured using the membrane gradostat bioreactor, highlighting the potential of these techniques as a platform for future strain improvement strategies.]]> Wed 12 May 2021 22:17:57 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:2830 Wed 12 May 2021 20:59:35 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4445 Wed 12 May 2021 20:55:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5241 Wed 12 May 2021 20:14:05 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5329 Wed 12 May 2021 19:26:40 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5228 Wed 12 May 2021 19:16:01 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1944 Wed 12 May 2021 18:33:25 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5039 Wed 12 May 2021 18:14:11 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:2561 Wed 12 May 2021 18:12:28 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5336 Wed 12 May 2021 17:50:26 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5831 Wed 12 May 2021 17:47:39 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1061 Wed 12 May 2021 17:39:38 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5243 1, it was asserted that both O. mossambicus and C. gariepinus were mortality-dominated and fairly heavily exploited. However, potential for sustainable exploitation existed since both species showed signs of resilience due short longevity and high rate of natural mortality. Given the limitation of simple exponential models of fish mortality and growth under the situation of seasonal fluctuation of water levels, a simple predictive hydroclimatic- fisheries model was developed. The model predicted the life-history and production parameters fairly accurately (0.53 ≤ r² ≥ 0.98, p ≤ 0.05), and showed that environmental and biological events in the floodplain significantly (0.43 ≤ r² ≥ 0.91, p ≤ 0.05) followed the periodic function of time (day-of-the-year), hence, strongly seasonal. In addition, the flood-pulse preceded all the major biological events, with predicted phase lags established at 55.6º for peak flood, 157.2º, 260.1º, 334.6º and 341.4º for condition factor for O. mossambicus, recruitment, spawning period for O. mossambicus and C. gariepinus, respectively. Therefore, it was recommended that water obstruction on the Shire River must ensure sufficient water flow during the peak flood and spawning period to allow flooding and inundation of the floodplain in order to create habitat favourable for spawning and feeding as well as improve recruitment.]]> Wed 12 May 2021 17:32:49 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3970 Wed 12 May 2021 17:15:50 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1507 Wed 12 May 2021 16:25:23 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:2868 Wed 12 May 2021 15:58:44 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3769 Thu 13 May 2021 10:28:35 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3939 Thu 13 May 2021 08:52:34 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:2988 Thu 13 May 2021 08:46:54 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5712 Thu 13 May 2021 07:16:42 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3929 Thu 13 May 2021 07:14:41 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4447 Thu 13 May 2021 07:13:40 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1315 Thu 13 May 2021 06:39:27 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3699 Thu 13 May 2021 06:37:43 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1071 Thu 13 May 2021 05:50:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3793 Thu 13 May 2021 05:42:51 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6030 Thu 13 May 2021 05:37:21 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1719 Thu 13 May 2021 05:33:14 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3343 Thu 13 May 2021 05:29:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1786 Thu 13 May 2021 03:30:24 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3997 Thu 13 May 2021 03:09:31 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5772 Thu 13 May 2021 02:57:41 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3247 Thu 13 May 2021 02:51:06 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4324 Thu 13 May 2021 02:43:41 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4228 Thu 13 May 2021 00:20:07 SAST ]]>